Authors: Davey M Smith; Susanne J May; Samantha Tweeten; Lydia Drumright; Mary E Pacold; Sergei L Kosakovsky Pond; Rick L Pesano; Yolanda S Lie; Douglas D Richman; Simon D W Frost; Christopher H Woelk; Susan J Little Journal: AIDS Date: 2009-01-14 Impact factor: 4.177