What's New on the NIOSH Website

The following is a listing of items posted to the NIOSH Web site in 2013. Postings prior to 2013 can be found in the NIOSH What’s New Archives.

2013: January • February • March • April • May • June • July • August • September • October • November • December

September 2013

9/30

• NIOSH eNews – October, 2013
• NIOSH Safety and Health Topic:Cleaning and Custodial Services
• Board of Scientific Counselors Workgroup Final Report, September 18, 2013:Structuring Labor-Management Participation in Research Partnerships: Request for Analysis and Recommendations and NIOSH Director’s response to the report and letter
• Federal Register Notice:Announcement of Requirements and Registration for Respirator Trusted-Source Mobile Application ChallengeExternal

9/24

• Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External

9/19

• NIOSH Science Blog:Powerful New Videos Encourage Those Who Qualify to Seek Care through the World Trade Center Health Program
• Federal Register Notice:World Trade Center Health Program; Addition of Prostate Cancer to the List of WTC-Related Health ConditionsExternal

9/18

• NIOSH Update: NIOSH Opens Door to Expanded Data and Statistics Gateway
• NIOSH Data and Statistics Gateway
• Wildland Fire Fighting: Hot Tips to Stay Safe and Healthy – DHHS (NIOSH) Publication No. 2013-158

9/16

• NIOSH Science Blog: Preventing Deaths in Manure Storage Facilities Through Proper Ventilation

9/13

• Federal Register Notice:Proposed Data Collections Submitted for Public Comment and RecommendationsExternal
• Federal Register Notice:Decision to Evaluate a Petition to Designate a Class of Employees from the Sandia National Laboratory-Livermore in Livermore, California To Be Included in the Special Exposure CohortExternal

9/12

• Federal Register Notice:Safety and Occupational Health Study Section (SOHSS), National Institute for Occupational Safety and Health (NIOSH or Institute)External
• Federal Register Notice:Disease, Disability, and Injury Prevention and Control Special Emphasis Panel (SEP): Initial ReviewExternal

9/6

• Getting optimal performance from a powered air‐purifying respirator (PAPR) depends on the condition of its battery! – DHHS (NIOSH) Publication No. 2013-146

9/5

• NIOSH Science Blog: Happy N95 Day! A Guide to N95 Resources

9/4

• NIOSH Update: New Factsheets Provide Tips for Young Drivers
• NIOSH eNews – September, 2013
• Federal Register Notice: Proposed Data Collections Submitted for Public Comment and RecommendationsExternal
• Federal Register Notice: Request for Information: Collection and Use of Nonfatal Workplace Violence Information from the National Crime Victimization SurveyExternal
• Federal Register Notice: Development of Inward Leakage Standards for Half-Mask Air-Purifying Particulate RespiratorsExternal
• What’s special about Chemical, Biological, Radiological, and Nuclear (CBRN) air-purifying respirators (APR)?– DHHS (NIOSH) Publication No. 2013-157
• What’s special about Chemical, Biological, Radiological, and Nuclear (CBRN) powered air-purifying respirators (PAPR)?– DHHS (NIOSH) Publication No. 2013-156
• Work-Related Motor Vehicle Crashes: Preventing Injuries to Young Drivers: What Employers Should Know– DHHS (NIOSH) Publication No. 2013-153
• Work-Related Motor Vehicle Crashes: Preventing Injuries to Young Drivers: What Parents Should Know – DHHS (NIOSH) Publication No. 2013-152

August 2013

8/29

• NIOSH Update: Labor Day 2013: Statement by NIOSH Director John Howard, M.D.
• Respirator Awareness: Your Health May Depend On It – DHHS (NIOSH) Publication No. 2013-138

8/28

• Federal Register Notice:Advisory Board on Radiation and Worker Health: Notice of Charter RenewalExternal
• Federal Register Notice:Subcommittee for Dose Reconstruction Reviews (SDRR), Advisory Board on Radiation and Worker Health (ABRWH or the Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External

8/27

• NIOSH Science Blog: Ladder Safety: There’s an App for That

8/22

• Morbidity and Mortality Weekly Report (MMWR): Occupational Highway Transportation Deaths Among Workers Aged >or= 55 Years—United States, 2003–2010

8/21

• Federal Register Notice: Board of Scientific Counselors, National Institute for Occupational Safety and Health (BSC, NIOSH)External

8/12

• NIOSH Science Blog: Free On-line Violence Prevention Training for Nurse
• NIOSH Update: On-Line Course Trains Nurses on Preventing Workplace Violence
• Workplace Violence Prevention for Nurses– DHHS (NIOSH) Publication No. 2013-155

8/9

• PtD – Mechanical-Electrical Systems – Instructor’s Manual– DHHS (NIOSH) Publication No. 2013-134
• Federal Register Notice: National Institute for Occupational Safety and Health (NIOSH) Personal Protective Technology (PPT) Program; Framework Document for the Healthcare Worker Personal Protective Equipment Action PlanExternal

8/7

• NIOSH Science Blog: The Importance of Occupational Safety and Health: Making for a

8/6

• Federal Register Notice: Agency Forms Undergoing Paperwork Reduction Act ReviewExternal
• PtD – Structural Steel Design – Instructor’s Manual– DHHS (NIOSH) Publication No. 2013-136
• PtD – Reinforced Concrete Design – Instructor’s Manual– DHHS (NIOSH) Publication No. 2013-135

8/1

• NIOSH eNews – August, 2013
• NIOSH Science Blog: 1-Bromopropane
• OSHA/NIOSH Hazard Alert: 1-Bromopropane– DHHS (NIOSH) Publication No. 2013-150

July 2013

7/25

• NIOSH Update: Robotic Talking Head Speaks Out in Support of Respirator Fit Research
• NIOSH Science Blog: Advanced Headforms for Evaluating Respirator Fit
• Federal Register Notice: Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External

7/24

• Federal Register Notice: Proposed Data Collections Submitted for Public Comment and RecommendationsExternal

7/16

• NIOSH Science Blog:First NIOSH Comic Helps Dispel Internet “Mythâ€
• Federal Register Notice: Meeting; Subcommittee for Dose Reconstruction Reviews, Advisory Board on Radiation and Worker Health (ABRWH or the Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External

7/11

• Preventing Heat-related Illness or Death of Outdoor Workers (Pub. No. 2013-143) (Spanish) Prevención de las enfermedades relacionadas con el calor o muerte de trabajadores que se desempeñan al aire libre

7/9

• NIOSH eNews – July, 2013
• Federal Register Notice:Mine Safety and Health Research Advisory Committee, National Institute for Occupational Safety and Health (MSHRAC, NIOSH)External

7/8

• NIOSH Topic: Solid Waste Industry
• NIOSH Science Blog: Reducing Taxicab Homicides
• Hispanic Worker Dies After Fall From Step Ladder While Cleaning Windows – North Carolina (FACE 2009-01) (Spanish) Trabajador hispano muere tras caer de una escalera de tijera mientras limpiaba ventanas – Carolina del Norte

7/3

• Federal Register Notice:World Trade Center Health Program Scientific/Technical Advisory Committee; Nominations of CandidatesExternal

7/2

• Federal Register Notice: World Trade Center Health Program; Addition of Prostate Cancer to the List of WTC-Related Health ConditionsExternal

June 2013

6/28

• Federal Register Notice: World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP-STAC)External

6/26

• Federal Register Notice: Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External
• Federal Register Notice: Subcommittee on Procedures Review, Advisory Board on Radiation and Worker Health (ABRWH), National Institute for Occupational Safety and Health (NIOSH)External

6/24

• Federal Register Notice: Request for Information on Toluene DiisocyanatesExternal
• NIOSH Science Blog: How Does Work Affect the Health of the U.S. Population? Free Data from the 2010 NHIS-OHS Provides the Answers

6/21

• Federal Register Notice: Board of Scientific Counselors, National Center for Injury Prevention and Control, (BSC, NCIPC)External
• Federal Register Notice: Disease, Disability, and Injury Prevention and Control Special Emphasis Panel (SEP): Initial ReviewExternal

6/19

• Federal Register Notice: Survey of Nanomaterial Risk Management PracticesExternal

6/18

• Federal Register Notice: Determination Concerning a Petition To Add a Class of Employees to the Special Exposure CohortExternal

6/17

• NIOSH Update: New NIOSH Smart Phone App Addresses Ladder Safety
• Federal Register Notice: National Institute for Occupational Safety and Health (NIOSH) Traumatic Injury Research and Prevention Program and Strategic Goals; Draft Document AvailabilityExternal
• NIOSH Science Blog: Safety and Health for Fire Fighters

6/14

• Federal Register Notice: National Institute for Occupational Health (NIOSH)-Certified B Readers; Training and TestingExternal
• Federal Register Notice: Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

6/13

• Federal Register Notice: Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

6/12

• NIOSH Update: The Role of Taxicab Security Equipment in Preventing Driver Homicides Examined in New Study

6/11

• Federal Register Notice: Request for Nominations of Candidates To Serve on the World Trade Center Health Program Scientific/Technical Advisory Committee (the STAC or the Committee), Centers for Disease Control and Prevention, Department of Health and Human ServicesExternal
• Simple Solutions for Home Building Workers – DHHS (NIOSH) Publication No. 2013-111
• Simple Solutions for Home Building Workers (Pub. No. 2013-111) (Spanish) Soluciones simples para los trabajadores de la construcció;n residencial

6/10

• NIOSH Science Blog: Green Buildings and Human Health

6/7

• NIOSH Safety and Health Topic: Upper Limb Musculoskeletal Disorder Consortium

6/6

• Federal Register Notice: Proposed Data Collections Submitted for Public Comment and RecommendationsExternal

6/4

• NIOSH eNews – June, 2013
• Straight Talk About Nail Gun Safety – DHHS (NIOSH) Publication No. 2013-149
• Straight Talk About Nail Gun Safety (Pub. No. 2013-149) (Spanish) Plática directa sobre seguridad con pistolas de clavos

6/3

• Federal Register Notice: NIOSH List of Antineoplastic and Other Hazardous Drugs in Healthcare Settings 2014: Proposed Additions and Deletions to the NIOSH Hazardous Drug ListExternal
• Federal Register Notice: Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

May 2013

5/31

• NIOSH Science Blog: NIOSH HPD Well-Fit™: The Future is Fit-Testing

5/30

• NIOSH Safety and Health Topic:NIOSH Center for Workers’ Compensation Studies (CWCS)

5/29

• Federal Register Notice: Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

5/23

• Preventing Heat-related Illness or Death of Outdoor Workers – DHHS (NIOSH) Publication No. 2013-143
• Federal Register Notice: Partnerships To Advance the National Occupational Research Agenda (NORA)External

5/21

• Use of Workers’ Compensation Data for Occupational Safety and Health: Proceedings from June 2012 Workshop – DHHS (NIOSH) Publication No. 2013-147a

5/17

• NIOSH Science Blog: Does your workplace culture help protect you from hepatitis?

5/16

• Preventing Occupational Respiratory Disease from Exposures Caused by Dampness in Office Buildings, Schools, and Other Nonindustrial Buildings (Pub. No. 2013-102) (Spanish) Prevención de enfermedades respiratorias ocupacionales por exposición causadas por la humedad en edificios de oficinas, escuelas y otros edificios no industriales

5/14

• NIOSH Safety and Health Topic: Occupational Hearing Loss (OHL) Surveillance
• Health and Safety of Young Workers: Proceedings of a U.S. and Canadian Series of Symposia – DHHS (NIOSH) Publication No. 2013-144
• NIOSH Update: Work, Stress, and Health Conference Media Advisory

5/13

• NIOSH Science Blog: Women’s Health at Work

5/8

• NIOSH Science Blog: Improving Respirator Use and Compliance in Healthcare – An Invitation

5/7

• Occupational Hearing Loss Surveillance – DHHS (NIOSH) Publication No. 2013-130

5/6

• NIOSH eNews – May, 2013

5/3

• Promoting Hearing Health among Fire Fighters – DHHS (NIOSH) Publication No. 2013-142
• Reducing Exposure to Lead and Noise at Outdoor Firing Ranges (Pub. No. 2013-104) (Spanish) Reducción de la exposición al plomo y al ruido en campos de tiro al aire libre
• Understanding the Breathing Gas Capacities (ratings) of Escape Respirators for Mineworker Use – DHHS (NIOSH) Publication No. 2013-148

5/2

• Federal Register Notice: Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

5/1

• Federal Register Notice: Issuance of final guidance publication – External

April 2013

4/30

• NIOSH Science Blog: Cost-effective Rollover Protective Structure (CROPS)
• NIOSH Update: NIOSH, OSHA and CPWR – The Center for Construction Research and Training Announce Re-launch of the National Campaign to Prevent Falls

4/29

• TWH™ in Action! Volume 2, Number 2 – April 2013
• OSHA/NIOSH Hazard Alert: Methylene Chloride Hazards for Bathtub Refinishers (Pub. No. 2013-110) (Spanish) OSHA NIOSH Alerta de peligro: Peligros del cloruro de metileno para los restauradores de bañeras

4/26

• NIOSH Update: NIOSH Presents 2013 Awards for Significant Scientific Contributions
• NIOSH Science Blog: WORKERS MEMORIAL DAY 2013
• NIOSH Update: Statement by John Howard, M.D., Director, National Institute for Occupational Safety and Health, For Workers’ Memorial Day 2013
• Federal Register Notice: Subcommittee for Dose Reconstruction Reviews (SDRR), Advisory Board on Radiation and Worker Health (ABRWH or the Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External
• Federal Register Notice: Safety and Occupational Health Study Section (SOHSS), National Institute for Occupational Safety and Health (NIOSH or Institute)External

4/24

• Federal Register Notice: Request for Information About Diethanolamine (CAS No. 111-42-2)External
• NIOSH Update: NIOSH Recommends New Level of Exposure for Nanomaterials
• Current Intelligence Bulletin 65: Occupational Exposure to Carbon Nanotubes and Nanofibers – DHHS (NIOSH) Publication No. 2013-145

4/23

• NIOSH Update: New Interagency Collaboration to Focus on Impacts of Shale Gas Drilling

4/22

• NIOSH Bibliography of Communication and Research Products 2012 – DHHS (NIOSH) Publication No. 2013-139

4/17

• Federal Register Notice: World Trade Center Health Program; Certification of Breast Cancer in WTC Responders and Survivors Exposed to PCBsExternal

4/15

• NIOSH Science Blog:Help! What do you want from a mobile Pocket Guide?

4/12

• NIOSH Fact Sheet – DHHS (NIOSH) Publication No. 2013-140
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal

4/11

• Mining Feature: NIOSH Illumination Research Addresses Visual Performance Needs with LED Technology
• Federal Register Notice: National Institute for Occupational Safety and Health Partnership Opportunity on a Research Project To Evaluate the Performance of Isolation GownsExternal

4/10

• Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH)External

4/9

• Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

4/4

• NIOSH eNews – April, 2013

4/3

• Safe Skilled Ready Workforce Initiative

4/1

• NIOSH Science Blog: Workplace Health Is Public Health

March 2013

3/29

• Federal Register Notice: Subcommittee on Procedures Review, Advisory Board on Radiation and Worker Health (ABRWH), National Institute for Occupational Safety and Health (NIOSH)External

3/28

• Federal Register Notice: World Trade Center Health Program Eligibility Requirements for Shanksville, Pennsylvania and Pentagon RespondersExternal

3/27

• Federal Register Notice: Proposed Data Collections Submitted for Public Comment and RecommendationsExternal
• Federal Register Notice: Respirator Certification FeesExternal
• Federal Register Notice: Respirator Certification Fees; Public MeetingExternal

3/26

• NIOSH Science Blog: Contractors Wanted: Help NIOSH Advance Research to Protect Workers from Silica
• Federal Register Notice: Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Determination Concerning a Petition To Add a Class of Employees to the Special Exposure CohortExternal
• Federal Register Notice: Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Determination Concerning a Petition To Add a Class of Employees to the Special Exposure CohortExternal

3/21

• Work-Related Amputations: Who’s Counting?

3/20

• NIOSH Partners with Organizations and Industry to Reduce Aviation Fatalities in Alaska – DHHS (NIOSH) Publication No. 2013-137
• Through-the-Earth, Post-Accident Communications-an Emerging Technology (Pub. No. 2013-105) (Spanish) Comunicaciones subterráneas posteriores a accidentes: una tecnología emergente

3/11

• NIOSH Science Blog: New Findings on Lung Tumor Formation in Laboratory Mice Exposed to Multi-Walled Carbon Nanotubes

3/8

• A new perimeter control blast design concept for underground metal/nonmetal drifting applications – DHHS (NIOSH) Publication No. 2013-129

3/7

• MMWR: Fatal and Nonfatal Injuries Involving Fishing Vessel Winches – Southern Shrimp Fleet, United States, 2000-2011

3/5

• Medical Surveillance for Healthcare Workers Exposed to Hazardous Drugs (Pub. No. 2013-103) (Spanish) Vigilancia médica para los trabajadores de la salud expuestos a medicamentos peligrosos
• NIOSH eNews – March, 2013

3/4

• Fire Fighters Resources Directory

February 2013

2/27

• Handle Laundry Safely (Correctional Facilities) (Pub. No. 2013-122) (Spanish) Tenga cuidado al tocar la ropa de lavar. (Cárceles)
• What is MRSA? (Inmates) (Pub. No. 2013-118) (Spanish) ¿Qué es el SARM? (Prisioneros)
• Washing Your Hands Stops MRSA (Inmates) (Pub. No. 2013-113) (Spanish) El lavado de las manos detiene el SARM (Prisioneros)
• MRSA and the Workplace (Pub. No. 2013-112) (Spanish) El SARM y el sitio de trabajo

2/25

• PFDs That Work: Overview – DHHS (NIOSH) Publication No. 2013-131
• NIOSH Update: NIOSH Announces Free, Confidential 2013 Screenings For Coal Workers’ Pneumoconiosis For Coal Miners

2/21

• Federal Register Notice: Proposed Data Collections Submitted for Public Comment and RecommendationsExternal
• Federal Register Notice: National Institute for Occupational Safety and Health Personal Protective Technology for Pesticide Handlers: Stakeholder MeetingExternal
• NIOSH Update: NIOSH and NHCA present 2013 Safe-in-Sound Excellence in Hearing Loss Prevention Awards™

2/19

• PFDs That Work: Trawlers – DHHS (NIOSH) Publication No. 2013-109
• PFDs That Work: Longliners – DHHS (NIOSH) Publication No. 2013-108
• PFDs That Work: Gillnetters – DHHS (NIOSH) Publication No. 2013-107
• PFDs That Work: Crabbers – DHHS (NIOSH) Publication No. 2013-106

2/14

• NIOSH Science Blog: Maintaining a Relationship with your SCBA

2/12

• Proposed Data Collections Submitted for Public Comment and RecommendationsExternal

2/11

• NIOSH eNews: February, 2013
• NIOSH Update: Special Journal Issue Highlights Significant Occupational Injury Research Accomplishments
• Agency Forms Undergoing Paperwork Reduction Act ReviewExternal

2/7

• Federal Register Notice: National Institute for Occupational Safety and Health Respiratory Protection for Healthcare Workers: Stakeholder MeetingExternal
• Federal Register Notice: Issuance of Final Guidance PublicationExternal

2/4

• NIOSH Science Blog: Dangers of Bathtub Refinishing
• OSHA/NIOSH Hazard Alert: Methylene Chloride Hazards for Bathtub Refinishers – DHHS (NIOSH) Publication No. 2013-110

January 2013

1/30

• TWH™ in Action! Volume 2, Number 1 – January 2013

1/29

• NIOSH Factsheet: Solid Waste Industry (Pub. No. 2012-140) (Spanish) Hoja informativa de NIOSH: Industria de los desechos sólidos

1/28

• NIOSH Science Blog: Hypertension and Low Wages

1/24

• Federal Register Notice: Notice of Availability of Final Environmental Assessment (FINAL EA) and a Finding of No Significant Impact (FONSI) for Metropolitan Sewer District of Greater Cincinnati Easement on HHS/CDC/NIOSH Taft North Campus, Cincinnati, OHExternal
• Criteria for a Recommended Standard: Occupational Exposure to Hexavalent Chromium – DHHS (NIOSH) Publication No. 2013-128

1/18

• MRSA and the Workplace – DHHS (NIOSH) Publication No. 2013-112
• Washing Your Hands Stops MRSA (Inmates) – DHHS (NIOSH) Publication No. 2013-113
• Washing Your Hands Stops MRSA (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-114
• Use Hand Sanitizer, Bottle (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-115
• Use Hand Sanitizer, Wall-Mounted Dispenser (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-116
• What is MRSA? (Correctional Officers) – DHHS (NIOSH) Publication No. 2013-117
• What is MRSA? (Inmates) – DHHS (NIOSH) Publication No. 2013-118
• What is MRSA? (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-119
• Managers: Protect Correctional Staff from MRSA – DHHS (NIOSH) Publication No. 2013-120
• Managers’ Checklist for Protecting Correctional Staff from MRSA – DHHS (NIOSH) Publication No. 2013-121
• Handle Laundry Safely (Correctional Facilities) – DHHS (NIOSH) Publication No. 2013-122
• Use Personal Protective Equipment (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-123
• MRSA Can Live on High-Touch Surfaces (Correctional Facilities) – DHHS (NIOSH) Publication No. 2013-124
• Sharing Personal Items Can Spread MRSA (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-125
• If You Have a MRSA Infection (Correctional Staff) – DHHS (NIOSH) Publication No. 2013-126
• Federal Register Notice: Update of NIOSH Nanotechnology Strategic Plan for Research and GuidanceExternal

1/17

• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure CohortExternal

1/14

• NIOSH Science Blog: Catching the Flu: NIOSH Research on Airborne Influenza Transmission
• Federal Register Notice: Self-Contained Breathing Apparatus Remaining Service-Life Indicator Performance RequirementsExternal

1/8

• NIOSH Science Blog: Top 12 NIOSH Science Blog Posts in 2012

1/7

• NIOSH eNews: January, 2013

1/3

• Health Hazard Evaluation Report: Evaluation of Radon Levels at a U.S. Government FacilityCdc-pdf

1/2

• Federal Register Notice: Mine Safety and Health Research Advisory Committee: Notice of Charter RenewalExternal
• Federal Register Notice: Determination Concerning a Petition To Add a Class of Employees to the Special Exposure CohortExternal