1. Department of Endocrinology-Growth and Development, Children’s Hospital “P. & A. Kyriakou”, Athens, Greece
2. INSERM U1169, Bicêtre Hospital, Paris Sud University, Paris, France
3. 2nd Department of Paediatrics, University of Athens, “P & A Kyriakou” Children’s Hospital, Athens, Greece
4. APHP Reference Center for rare disorders of the Calcium and Phosphate, Bicêtre Hospital, Paris Sud University, Paris, France