1 Department of Medicine, Hebert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Md.
2 Department of Medicine, and Medical Education, Hebert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Md.
3 Departments of Surgery and Pediatrics, Hebert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Md; Neurosurgery, Pediatric Specialists of Virginia, Fairfax, Va.
4 Department of Medicine, and Student Affairs, Hebert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Md.