1. Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
2. Unit for Bone Metabolism Diseases and Diabetes and Laboratory of Endocrine and Metabolic Research, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy
3. Department of Internal Medicine, University of Central Florida College of Medicine, Orlando, Florida
4. South Orange County Endocrinology, Laguna Hills, California
5. Division of Endocrinology, University of California, San Francisco (UCSF Fresno), Fresno, California