1. Department of Orthopaedic Surgery, Assaf Harofeh Medical Center, Zerifin & Sackler School of Medicine, Tel Aviv University, 69978 Tel Aviv, Israel
2. Israel Defense Forces Institute of Military Physiology and Heller Institute of Medical Research, Haim Sheba Medical Center, Military P.O. Box 02149, 52621 Ramat Gan, Israel
3. Hebrew University Medical School, Ein Kerem, 91120 Jerusalem, Israel
4. Bone Health Research Program, U.S. Army Research Institute of Environmental Medicine, Military Performance Division, Natick, MA 01760, USA
5. Ariel University, 40700 Ariel, Israel