Pregnancy and contraceptive use among women participating in an HIV prevention trial in Tanzania
Aderonke Odutola, Kathy Baisley, Richard J Hayes, Mary Rusizoka, Clare Tanton, Helen A Weiss, John Changalucha, David A Ross, Deborah Watson-Jones
Sexually Transmitted Infections Oct 2012, 88 (6) 436-443; DOI: 10.1136/sextrans-2011-050412