1. Hand Unit, Plastic and Reconstructive Surgery, Soroka Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva P.O. Box 151, Israel
2. Soroka Clinical Research Center, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva P.O. Box 151, Israel
3. Department of Public Health Epidemiology, Biostatistics and Community Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva P.O. Box 151, Israel