1. Division of General Pediatrics, Department of Pediatrics and Communicable Diseases, the University of Michigan School of Medicine, Ann Arbor, MI; Division of General Pediatrics, D3202 Medical Professional Bldg., 1500 E. Medical Center Drive, Ann Arbor, Ml 48109-0718
2. Departments of Radiology, Johns Hopkins School of Medicine, Baltimore, MD; Departments of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD
3. Departments of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
4. Departments of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD
5. Departments of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD; Division of Neonatology at the Johns Hopkins School of Medicine, Baltimore, MD