1. Shoulder and Elbow Service, IRCCS Humanitas Institute, Rozzano, Milan, Italy
2. Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari, Italy
3. Shoulder Service, MIULLI Hospital, Acquaviva delle Fonti, Bari, Italy
4. Department of Biomedical Science and Human Oncology, University of Bari, Italy