[1] Univ Washington, Dept Psychol, Seattle, WA 98195 USA
[2] Ctr Dis Control & Prevent, Ctr HIV AIDS Viral Hepatitis STD & TB Prevent, Div HIV AIDS Prevent, Atlanta, GA USA
[3] Childrens Natl Med Ctr, Dept Psychol, Washington, DC 20010 USA
[4] Childrens Natl Med Ctr, Dept Special Immunol, Washington, DC 20010 USA
[5] Montefiore Med Ctr, AIDS Res Program, Bronx, NY 10467 USA
[6] Howard Univ, Dept Pediat & Child Hlth, Washington, DC 20059 USA