1. Department of Experimental Medicine, Sapienza University of Rome - Policlinico Umberto I Hospital , Rome, Italy
2. Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università Federico II di Napoli , Naples, Italy
3. Pituitary Unit, Department of Endocrinology and Metabolism, Fondazione Policlinico Universitario A. Gemelli, IRCCS , Rome, Italy
4. Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore , Rome, Italy
5. Endocrinology Unit, Department of Oncology and Medical Specialties, A.O. San Camillo-Forlanini , Rome, Italy
6. Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital , Oxford, UK