1. Nursing and Midwifery Care Research Center, Health Management Research Institute, Iran University of Medical Sciences, Tehran, Iran
2. Preventive Medicine and Public Health Research Center, Psychosocial Health Research Institute, Department of Community and Family Medicine, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
3. School of Health Professions, Eastern Virginia Medical School, Norfolk, VA, USA
4. Department of Pediatrics, School of Medicine, Children Medical Research and Training Hospital, Tabriz University of Medical Sciences, Tabriz, Iran