1. Endocrinology Division, Department of Internal Medicine, University Hospital “Dr. Jose E. Gonzalez”, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo Leon, Mexico
2. Plataforma INVEST Medicina UANL-Ker Unit Mayo Clinic (Ker Unit México), Universidad Autónoma de NL, Monterrey 64460, Mexico
3. Knowledge and Evaluation Research Unit in Endocrinology, Mayo Clinic, Rochester, MN, USA