1. Pituitary Unit, Department of Neurosurgery, Istituto Scientifico San Raffaele, Università Vita-Salute, Milan, Italy.
2. Department of Endocrinology, Department of Medical Sciences, University of Cagliari, Cagliari, Italy.
3. Unit of Endocrinology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy.