1. Spiritual Health Research Center, Iran University of Medical Sciences, Tehran, Iran
2. Tehran Psychiatry Institute, Iran University of Medical Sciences, Tehran, Iran
3. Community Medicine and Public Health Research Center, Iran University of Medical Sciences, Tehran, Iran
4. Grace Hospital, University of Manitoba, Winnipeg, Canada
5. Psychiatry & Behavioral Sciences, Medicine, Duke University Medical Center, Durham, North Carolina, USA
6. Department of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
7. Public Health, Ningxia Medical University, Yinchuan, P.R. China
8. Shiraz University of Medical Sciences, Shiraz, Iran