1. Regional Coordinator Centre for Rare Diseases, Department of Laboratory Medicine, Academic Hospital “Santa Maria della Misericordia” Udine; Udine Italy
2. Department of Medical Genetics; Ospedale San Pietro Fatebenefratelli; Rome Italy
3. International Centre for Life, Central Parkway; Institute of Genetic Medicine; Newcastle upon Tyne UK
4. Unitá per le disabilitá gravi in etá evolutiva; IRCCS E. Medea-La Nostra Famiglia; Udine Italy
5. Institute of Medical Genetics, Department of Laboratory Medicine, Academic Hospital “Santa Maria della Misericordia” Udine; Udine Italy
6. Dipartimento di area Medica; Università di Udine; Udine Italy