1. Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Rome, Italy
2. Institute of Comparative Molecular Endocrinology, Ulm University, Ulm, Germany
3. National Centre for Rare Diseases, Istituto Superiore di Sanità, Rome, Italy
4. Institute of Human Genetics, Ulm University, Ulm, Germany
5. Department of Pediatrics, Università degli Studi di Padova, Padua, Italy
6. Institute of Human Genetics, University Hospital Magdeburg, 39120 Magdeburg, Germany