1 Department of Medicine and Rehabilitation, Policlinico di Monza, Monza, Italy; School of Medicine and Surgery, University of Milano Bicocca, Milan, Italy. Electronic address: stefano.ciardullo@unimib.it.
2 Section of Endocrinology, Diabetes and Metabolism, Department of Medicine, University and Azienda Ospedaliera Universitaria Integrata of Verona, Verona, Italy.