1. Department of Clinical Neurophysiology, Uppsala University Hospital, Uppsala, Sweden;
2. Research Center for Genetic Medicine, Children National Medical Center;
3. Department of Pediatrics, The George Washington University Medical Center, Washington, District of Columbia;
4. Department of Medical Sciences, Uppsala University Hospital, Uppsala, Sweden;
5. Department of Physiology, University of Wisconsin, Madison, Wisconsin; and
6. Department of Anesthesiology, Karolinska Institute, Stockholm, Sweden;
7. Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania