[1] GENENTECH INC, DEPT PEDIAT, SAN FRANCISCO, CA 94080 USA
[2] UNIV CALIF LOS ANGELES, LOS ANGELES CTY HARBOR MED CTR, DEPT PEDIAT, TORRANCE, CA 90509 USA
[3] UNIV CHICAGO, MED CTR, DEPT PEDIAT, CHICAGO, IL 60637 USA
[4] CHILDRENS HOSP MED CTR, DEPT PEDIAT, CINCINNATI, OH 45229 USA
[5] UNIV COLORADO, MED CTR, DEPT PEDIAT, DENVER, CO 80202 USA
[6] UNIV CALIF LOS ANGELES, SCH MED, DEPT PEDIAT, LOS ANGELES, CA 90024 USA
[7] MASON CLIN, DEPT PEDIAT, SEATTLE, WA USA
[8] UNIV KANSAS, MED CTR, DEPT PEDIAT, KANSAS CITY, KS 66103 USA
[9] CORNELL UNIV, MED CTR, DEPT PEDIAT, NEW YORK, NY 10021 USA
[10] MONTEFIORE MED CTR, MED CTR, DEPT PEDIAT, BRONX, NY 10467 USA
[11] UNIV WASHINGTON, DEPT PEDIAT, SEATTLE, WA 98195 USA
[12] CHILDRENS ORTHOPED HOSP & MED CTR, DEPT PEDIAT, SEATTLE, WA 98105 USA