J Lorvick

Syringe and needle exchange as HIV/AIDS prevention for injection drug users.

J. Watters, J K Watters, M J Estilo, 1994, JAMA.

AIDS prevention for intravenous drug users in the community: Street-based education and risk behavior

J. Watters, M. Downing, M Downing, 1990, American journal of community psychology.