1. Department of Internal Medicine, Laboratory of Endocrinology, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil;
2. Department of Oncology Research, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland;
3. Department of Neuroendocrinology, Barrow Pituitary Center, Barrow Neurological Institute, Phoenix, AZ, USA