1. Departments of Radiology (V.G., J.C., A.O.M.), Keck School of Medicine, University of Southern California, Los Angeles, California 90027
2. Pediatrics (V.G., F.J.D., S.D.M.), Keck School of Medicine, University of Southern California, Los Angeles, California 90027
3. Orthopaedic Surgery (D.C.L.), Keck School of Medicine, University of Southern California, Los Angeles, California 90027