Concurrent Sexual Partnerships and Human Immunodeficiency Virus Risk Among South African Youth

Autor: Steffenson, Annie E., Pettifor, Audrey E., Seage, George R., Rees, Helen V., Cleary, Paul D.
Zdroj: Sexually Transmitted Diseases, 2011 Jun 01. 38(6), 459-466.
Databáze: JSTOR Journals