[1] UNIV SO CALIF, SCH MED, DEPT PEDIAT, LOS ANGELES, CA USA
[2] ADVENTIST HOSP, GLENDALE, CA USA
[3] UNIV SO CALIF, SCH MED, DEPT SURG, LOS ANGELES, CA USA
[4] CHILDRENS HOSP, DIV PEDIAT SURG, POB 54700, LOS ANGELES, CA 90054 USA
[5] UNIV SO CALIF, SCH MED, DEPT PATHOL, LOS ANGELES, CA USA