TY - JOUR A1 - Mitsunaga, T.M. A1 - Powell, A.M. A1 - Heard, N.J. A1 - Larsen, U.M. T1 - Extramarital sex among Nigerian men: polygyny and other risk factors Y1 - 2005 DO - 10.1097/01.qai.0000152396.60014.69 JF - Journal of Acquired Immune Deficiency Syndrome VL - 39 IS - 4 SP - 478 EP - -488 ER -