Sexual risk factors for HIV infection in early and advanced HIV epidemics in sub-Saharan Africa: systematic overview of 68 epidemiological studies.

by Li Chen, Prabhat Jha, Bridget Stirling, Sema K Sgaier, Tina Daid, Rupert Kaul, Nico Nagelkerke, International Studies of HIV/AIDS (ISHA) Investigators
Published 2007-10-01