1. Department of Diabetes and EndocrinologyUniversity of Oklahoma Health Sciences Center Oklahoma City Oklahoma USA
2. Department of PediatricsChildren's Hospital of Philadelphia Philadelphia Pennsylvania USA
3. The Biostatistics CenterGeorge Washington University Rockville Maryland USA
4. Department of Diabetes and EndocrinologyBaylor College of Medicine Houston Texas USA
5. FH Foundation Pasadena California USA
6. Department of Pediatric Endocrinology, Diabetes and MetabolismCase Western Reserve University Cleveland Ohio USA
7. Division of EndocrinologyCincinnati Children's Hospital and the University of Cincinnati Cincinnati Ohio USA