1. Dermatology Division, Department of Medicine, Hospital Universitario “Dr. José E. González”, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo Leon, Mexico
2. Endocrinology Division, Department of Medicine, Hospital Universitario “Dr. José E. González”, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo Leon, Mexico
3. Knowledge and Evaluation Research Unit, Division of Endocrinology, Diabetes, Metabolism and Nutrition, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
4. Clinical Research Unit, Hospital Universitario “Dr. José E. González”, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo Leon, Mexico