1. Departments of Neurology and Pediatrics, Kennedy Krieger Institute and Johns Hopkins University School of Medicine, Baltimore, MD
2. Department of Neurology and Pediatrics, University of California, San Francisco School of Medicine, San Francisco, CA
3. Department of Pediatrics, Pediatric Critical Care Medicine, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital, New York, New York
4. Department of Obstetrics and Gynecology, Sahlgrenska University Hospital, Göteborg University School of Medicine, Göteborg, Sweden