1. Department of Medicine, Washington Hospital Center, Washington, District of Columbia.
2. Department of Nuclear Medicine, Washington Hospital Center, Washington, District of Columbia.
3. Department of Pediatrics, Uniformed Services University of the Health Sciences, Bethesda, Maryland.
4. Department of Otolaryngology, Washington Hospital Center, Washington, District of Columbia.
5. Department of Pathology, Washington Hospital Center, Washington, District of Columbia.