1. Qazvin University of Medical Sciences, Qazvin, Iran
2. Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Taiwan; Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Taiwan; Department of Occupational Therapy, College of Medicine, National Cheng Kung University, Taiwan; Department of Public Health, College of Medicine, National Cheng Kung University, Taiwan
3. Kerman University of Medical Sciences, Iran
4. Mazandaran University of Medical Sciences, Iran
5. Guilan University of Medical Sciences, Iran
6. Yale University, USA; Connecticut Council on Problem Gambling, USA; Connecticut Mental Health Center, USA; Wu Tsai Institute, Yale University, USA
7. Jönköping University, Sweden; Qazvin University of Medical Sciences, Iran