TY - JOUR A1 - Katz, I. A1 - Low-Beer, D. T1 - Why has HIV stabilized in South Africa, yet not declined further? Age and sexual behavior patterns among youth Y1 - 2008 DO - 10.1097/OLQ.0b013e31817c0be5 JF - Sexually Transmitted Diseases VL - 35 IS - 10 SP - 837 EP - -842 ER -