1. Medical Genetics Birth Defects Center, Steven Spielberg Pediatric Research Center, Ahmanson Pediatric Center, SHARE's Child Disability Center, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, CA 90048; Hadassah Medical School, Jerusalem, Israel
2. Medical Genetics Birth Defects Center, Steven Spielberg Pediatric Research Center, Ahmanson Pediatric Center, SHARE's Child Disability Center, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, CA 90048
3. The Neurofibromatosis Institute, 5415 Briggs Avenue, La Crescenta, CA 91214