1. Department of Clinical and Experimental Medicine University of Catania Catania Italy
2. Department BIOMETEC University of Catania Catania Italy
3. Department of Medical Genetics and Rare Orthopaedic Diseases IRCCS, Istituto Ortopedico Rizzoli Bologna Italy
4. Department of Medical Genetics and Rare Orthopaedic Diseases & CLIBI Laboratory IRCCS, Istituto Ortopedico Rizzoli Bologna Italy
5. Department of Clinical and Experimental Medicine University of Messina Messina Italy