Annalisa Sechi1, Elisa Fabbro2, Sandra Sirrs3. 1. Regional Coordinating Center for Rare Diseases, University Hospital of Udine, Udine, Italy. 2. Research and Third Mission Unit, University of Trieste, Trieste, Italy. 3. Division of Endocrinology, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.