[1] Elon Univ, Elon, NC 27244 USA
[2] NCI, Ctr Canc Res, Pediat Clin SE 1, Bethesda, MD 20892 USA
[3] NCI, Pediat Oncol Branch, Bethesda, MD 20892 USA
[4] Columbia Univ, HIV Ctr Clin & Behav Studies, Dept Psychiat, New York, NY 10032 USA
[5] Columbia Univ, HIV Ctr Clin & Behav Studies, Dept Sociomed Sci, New York, NY 10032 USA
[6] New York State Psychiat Inst & Hosp, New York, NY 10032 USA
[7] Childrens Natl Med Ctr, Burgess SIS Clin, Washington, DC 20010 USA
[8] Univ Maryland, Sch Med, Pediat AIDS Program, Baltimore, MD 21201 USA
[9] Childrens Natl Med Ctr, Burgess Clin, Washington, DC 20010 USA
[10] NIH, Ctr Clin, CCMD, Bethesda, MD 20892 USA
[11] Georgetown Univ Hosp, Pediat Infect Dis Dept, PHC, Washington, DC 20007 USA
[12] Univ Maryland, Baltimore, MD 21201 USA
[13] NIMH, Div Intramural Res Programs, NIH, Bethesda, MD 20892 USA