1. Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229-3039.
2. Department of Radiology. University of Cincinnati, College of Medicine, Cincinnati, OH.
3. University of Cincinnati College of Medicine, Cincinnati, OH.
4. Division of Pediatric Orthopaedics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
5. Department of Pharmacology, Korea University College of Medicine, Seoul, Korea.