Barbara Davis Center for Diabetes, Aurora, Colorado, USA. Grunberger Diabetes Institute, Bloomfield Hills, Michigan, USA. Upstate Medical University, Syracuse, New York, USA. Children's Hospital of Eastern Ontario, Ottawa, Ontario, CAN. University of Washington, Seattle, Washington, USA. Indiana University-Riley Hospital for Children, Indianapolis, Indiana, USA. University of Michigan Health System-University Hospital, Ann Arbor, Michigan, USA. Scripps Whittier Diabetes Institute, La Jolla, California, USA. Diabetes and Glandular Disease Clinic, San Antonio, Texas, USA. Rocky Mountain Diabetes and Osteoporosis Center, Idaho Falls, Idaho, USA. Rainier Clinical Research Center, Renton, Washington, USA. Mayo Clinic, Rochester, Minnesota, USA. Stanford University School of Medicine, Stanford, California, USA. Washington University in Saint Louis, St. Louis, Missouri, USA. Park Nicollet International Diabetes Center, Minneapolis, Minnesota, USA. Diablo Clinical Research, Walnut Creek, California, USA. SoCal Diabetes, Torrance, California, USA. University of South Dakota-Sanford Research, Sioux Falls, South Dakota, USA. Barbara Davis Center for Childhood Diabetes, Aurora, Colorado, USA. Atlanta Diabetes Associates, Atlanta, Georgia, USA. Medtronic, Northridge, California, USA.