1. Department of Pediatrics, Stritch School of Medicine, Loyola University, Department of Pediatrics, St. Joseph Hospital, Chicago; mailing address, 5214 North Western Avenue, Chicago, Ill. 60625
2. Department of Pediatrics, St. Joseph Hospital, Chicago, Ill
3. Department of Orthopedic Surgery, Northwestern University Medical School; Michael Reese Hospital, Chicago, Ill
4. 104 South Michigan Avenue, Chicago, Ill.