M Rafiei1, F Rivakani1, L Torabi1, F Alaeddini2, S Safiri3. 1. Disability Prevention, State Welfare Organization (SWO) of Iran, Iran. 2. Medical Procurement Organization, Iranian Red Crescent Society, Iran. 3. Department of Public Health, School of Nursing and Midwifery, Maragheh University of Medical Sciences, Maragheh, Iran; Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Electronic address: S-safiri@razi.tums.ac.ir.