1. Department of Medical Genetics National & Kapodistrian University of Athens, St. Sophia’s Children’s Hospital Athens Greece
2. Department of Clinical Genetics/LDGA Leiden University Medical Centre Leiden the Netherlands
3. Department of Haematology and Bone Marrow Transplantation Evangelismos Hospital Athens Greece
4. Genesis Genoma Laboratory Athens Greece
5. National & Kapodistrian University of Athens, St. Sophia’s Children’s Hospital Athens Greece