1 Division of Genetics and Dysmorphology, Department of Pediatrics, University of California, San Diego, San Diego, California; Rady Children's Hospital, San Diego, California. Electronic address: kkbarbour@health.ucsd.edu.
2 Rady Children's Hospital, San Diego, California; Department of Neurosciences, University of California, San Diego, La Jolla, California; Department of Pediatrics, University of California, San Diego, San Diego, California.
3 Division of Genetics and Dysmorphology, Department of Pediatrics, University of California, San Diego, San Diego, California; Rady Children's Hospital, San Diego, California.
4 Rady Children's Hospital, San Diego, California; Department of Pediatrics, University of California, San Diego, San Diego, California.
5 Division of Child Neurology, Department of Pediatrics, Weill Cornell Medicine, New York, New York.