1. Department of Biology, University of Thessaly Medical School, Larissa, Greece.
2. Department of Medical Genetics, University of Athens Medical School, “Aghia Sofia” Children's Hospital, Athens, Greece.
3. 2nd Department of Pediatrics, University of Athens Medical School, P.& A. Kyriakou Children's Hospital, Athens, Greece.
4. 2nd Department of Surgery, University of Athens Medical School, Areteion Hospital, Athens, Greece.