A protocol gives a step-by-step plan for a systematic review. The protocol details the rationale, hypotheses or research questions, search strategy, and planned methods of the review. The protocol is usually developed prior to the start of a review and can be submitted to a public registry.

Kamitani, E., Mizuno, Y., Collins, C., DeLuca, J. B., & Smith, D. K. Alternative PrEP care delivery models to improve PrEP care: Systematic review. PROSPERO: International prospective register of systematic reviews (CRD42022311747). 2022. Available from:

Kamitani, E., Higa, D., Crepaz, N., Wichser, M., & Mullins, M.Evidence-based and evidence-informed interventions for HIV pre-exposure prophylaxis (PrEP) use and persistence: A systematic review. PROSPERO 2021 CRD42021256460. Available from:

Crepaz, N., Higa, D., Mullins, M., Salabarria-Pena, Y., & Gunn, J. Systematic review of social and structural factors associated with HIV testing among Hispanic/Latino men who have sex with men (MSM) in the United Statesexternal icon. PROSPERO 2020 CRD42020175063. Available from:

McDonald, C., Barham, T., Mullins, M., Carter, J., Sipe, T., Becasen, J., Adegbite-Johnson, A., Arthur, B., Gaines, M., & Prather, C. Racism and HIV among African-Americans: A Systematic Reviewexternal icon. PROSPERO 2020 CRD42020160143. Available from:

Nji, M. A. M., Gunn, J., Higa, D., Mullins, M. Koenig, L. J., Denard, C. L., & Sipe. T. A. Assessing the effectiveness of data-to-care activities for improving HIV care outcomes: A systematic reviewexternal icon. PROSPERO 2020 CRD42020173095. Available from:

Kamitani, E., Johnson, A. H., Wichser, M., Mizuno, Y., DeLuca, J. B., & Higa, D. H. (2019). Mapping the study topics and characteristics of HIV pre-exposure prophylaxis research literature: A protocol for a scoping reviewexternal iconBMJ Open, 9(5), e024212. doi: 10.1136/bmjopen-2018-024212

Kamitani, E., Mizuno, Y., Wichser, M. E., Adegbite-Johnson, A. H., DeLuca, J. B., & Higa D. H. (2019). Systematic review of predictors for HIV pre-exposure prophylaxis uptake in key populations identified in national HIV prevention goalsexternal icon. PROSPERO 2019 CRD42019112390. Available from:

Mizuno, Y., Kamitani, E., Crepaz,N., Leighton, C., Gelaude, D., DeLuca, J., Wichser, M., & Smith, D. Systematic review of correlates of HIV pre-exposure prophylaxis (PrEP) prescription by health care providers in the United States (U.S.)external icon. PROSPERO 2019 CRD42019138889. Available from:

Becasen, J., Denard, C., Kamitani, E., Mullins, M., & Higa, D. (2018). HIV care outcomes among transgender persons with HIV in the U.S.: A systematic review and meta-analysisexternal icon. PROSPERO Protocol 2018 CRD42018079564. Available from:

Malekinejad, M., Horvathm H., Kahn, J.G., Barker, E., Lyles, C., Sipe, T., Tailor, A., Brooks, J., Purcell, D., Gift, T., Chesson, H., Ridpath, A., Bernstein, K., & DeLuca, J. Risk of HIV transmission and acquisition among HIV high-risk populations infected with other sexually transmitted infectionsexternal icon. PROSPERO: International prospective register of systematic reviews. 2018. CRD42018084299. Available from:

Rooks-Peck, C., Barham, T., DeLuca, J. B., Flores, S., Herron, A., Higa, D., Jeffries, W. L., IV, McCree, D., & Ross, L. (2018). Effectiveness of HIV stigma interventions for men who have sex with men (MSM) living with and without HIV: A systematic reviewexternal icon. PROSPERO Protocol 2018 CRD42018091305. Available from:

Semaan, S., Johnson, W., Rivadeneira, N., Adegbite, A., Neumann, M., Mullins, M., Rooks-Peck, C., Higa, D., & Sipe, T. (2017). Review of quantitative reviews that included meta-analysis results of HIV prevention interventions for persons who use drugsexternal icon. PROSPERO Protocol 2017 CRD42017070117. Available from:

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