TY - JOUR A1 - Kabiru, C. A1 - Ezeh, A. T1 - Factors associated with sexual abstinence among adolescents in four sub-Saharan African countries Y1 - 2007 DO - 10.2307/25549735 JF - African Journal of Reproductive Health VL - 11 IS - 3 SP - 111 EP - -132 ER -