[1] UNIV MIAMI, SCH MED, DEPT PEDIAT D4 4, MIAMI, FL 33101 USA
[2] UNIV CALIF LOS ANGELES, SCH MED, DEPT PEDIAT, LOS ANGELES, CA 90024 USA
[3] PEDIAT AIDS FDN, NOVATO, CA USA
[4] LOS ANGELES CTY DEPT HLTH SERV, LOS ANGELES PEDIAT AIDS CONSORTIUM, PEDIAT AIDS SURVEILLANCE STUDY, LOS ANGELES, CA USA
[5] UNIV MED & DENT NEW JERSEY, NEW JERSEY MED SCH, DEPT PEDIAT, NEWARK, NJ 07103 USA
[6] CHILDRENS HOSP NEW JERSEY, NEWARK, NJ USA
[7] ST VINCENTS HOSP & MED CTR, DEPT PEDIAT, NEW YORK, NY 10011 USA
[8] CHILDRENS HOSP OAKLAND, OAKLAND, CA USA
[9] UNIV CALIF SAN FRANCISCO, SCH MED, DEPT PEDIAT, SAN FRANCISCO, CA 94143 USA