1. Shoulder Unit, Division of Orthopaedic Surgery, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel-Aviv, Israel 64239.
2. Heller Institute of Warrior Health Research, Sheba Medical Center, 1 Emek ha-Ela Street, Ramat-Gan, Israel 5265601.
3. Environmental Epidemiology Department, Public Health Services, Ministry of Health, 39 Yirmiyahu Street, Jerusalem, Israel 9101002.
4. Ashkelon Academic College, 12 Itzhak Ben-Zvi Street, Ashkelon, Israel 78211.