1. Division of Medical Genetics, Department of Pediatrics; Stanford University School of Medicine; Stanford California
2. Division of Medical Genetics, Department of Pediatrics; University of California San Francisco; San Francisco California
3. Mendel Laboratory, IRCCS Casa Sollievo della Sofferenza Hospital; San Giovanni Rotondo (FG) Italy
4. The Stella Maris Clinical Research Institute for Child and Adolescent Neurology and Psychiatry; Calambrone (Pisa) Italy
5. Division of Medical Genetics, Department of Pediatrics; Loma Linda University; Loma Linda California
6. Division of Medical Genetics, Department of Pediatrics; UCSF Fresno; Fresno California