1. Couple-Based HIV Prevention for Low-Income Drug Users From New York City: A Randomized Controlled Trial to Reduce Dual Risks El-Bassel, Nabila; Gilbert, Louisa; Wu, Elwin; Witte, Susan S.; Chang, Mingway P.; Hill, Jennifer; Remien, Robert Howard 2011 Articles HIV infections—PreventionIntravenous drug abusersPoorCouples--Health and hygiene