TY - JOUR A1 - Boerma, J. A1 - Gregson, S. A1 - Nyamukapa, C. A1 - Urassa, M. T1 - Understanding the uneven spread of HIV within Africa: Comparative study of biologic, behavioral, and contextual factors in rural populations in Tanzania and Zimbabwe Y1 - 2003 DO - 10.1097/01.OLQ.0000078820.62897.A6 JF - Sexually Transmitted Diseases VL - 30 IS - 10 SP - 779 EP - -787 ER -