Silberzahn, B. E., Morris, M. B., Riegger, K. E., White, R. H., Tomko, C. A., Park, J. N., . . . Sherman, S. G. (2020). Barriers and facilitators to retaining a cohort of street-based cisgender female sex workers recruited in Baltimore, Maryland, USA: Results from the SAPPHIRE study. BMC Public Health.

Silberzahn, Bradley E., Miles B. Morris, Katelyn E. Riegger, Rebecca Hamilton White, Catherine A. Tomko, Ju Nyeong Park, Katherine H.A Footer, Steven S. Huettner, ja Susan G. Sherman. "Barriers and Facilitators to Retaining a Cohort of Street-based Cisgender Female Sex Workers Recruited in Baltimore, Maryland, USA: Results From the SAPPHIRE Study." BMC Public Health 2020.

Silberzahn, Bradley E., et al. "Barriers and Facilitators to Retaining a Cohort of Street-based Cisgender Female Sex Workers Recruited in Baltimore, Maryland, USA: Results From the SAPPHIRE Study." BMC Public Health 2020.