1. Division of Pediatric Endocrinology, Department of Pediatrics, Seattle Children's Hospital, Seattle, Washington, USA.
2. University of Washington School of Medicine, Seattle, Washington, USA.
3. Division of Adolescent Medicine, Department of Pediatrics, Seattle Children's Hospital, Seattle, Washington, USA.
4. Seattle Children's Research Institute, Seattle, Washington, USA.
5. Division of Radiology, Department of Pediatrics, Seattle Children's Hospital, Seattle, Washington, USA.