1 Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Strada Cadorna 90, Piancavallo, Verbania, Italy. g.grugni@auxologico.it.
2 National Centre for Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Rome, Italy.
3 Pediatric Unit, IRCCS San Raffaele Institute, Milan, Italy.
4 Department of Public Health and Pediatric Sciences, Regina Margherita Childrens' Hospital, University of Turin, Turin, Italy.
5 Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologia e Nutrizione, Università Federico II di Napoli, Naples, Italy.
6 UNESCO Chair for Health Education and Sustainable Development, Federico II University, Naples, Italy.
7 Department of Human Pathology of Adulthood and Childhood, Unit of Pediatrics, University of Messina, University Hospital of Messina, Messina, Italy.
8 Rare Disease Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy.
9 Dipartimento di Medicina (DIMED), University of Padua, Padua, Italy.
10 Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy.
11 Metabolic Disorders and Diabetes Unit, ''Giovanni XXIII'' Children's Hospital, A.O.U. Policlinico di Bari, Bari, Italy.
12 Department of Translational Medical Science, Section of Pediatrics, Università degli Studi di Napoli Federico II, Naples, Italy.
13 Pediatric Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari ''Aldo Moro'', Bari, Italy.
14 Prader-Willi Reference Center, Endocrinology and Diabetology Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy.
15 Unit of Paediatrics and Medical Genetics, Oasi Research Institute, IRCCS, Troina, Enna, Italy.
16 Pediatric Endocrinology Unit, Department of Child and Woman Health, University of Padua, Padua, Italy.
17 Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
18 Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy.
19 Department of Pediatrics, Endocrine Unit, Istituto Giannina Gaslini, IRCCS, Genoa, Italy.
20 Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy.
21 Pediatric Unit, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy.
22 Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Strada Cadorna 90, Piancavallo, Verbania, Italy.
23 Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
24 Department of Medical Sciences, University of Trieste, Trieste, Italy.
25 Institute for Maternal and Child Health IRCCS ''Burlo Garofolo'', Trieste, Italy.
26 Giovanni XXIII Pediatric Hospital, University of Bari ''Aldo Moro'', Bari, Italy.