TY - JOUR A1 - Mensch, B. A1 - Grant, M.J. A1 - Blanc, A. T1 - The Changing context of sexual initiation in sub-Saharan Africa Y1 - 2006 DO - 10.1111/j.1728-4457.2006.00147.x JF - Population Development Review VL - 32 IS - 4 ER -