1. Department of Epidemiology & Biostatistics, School of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran
2. Health Management and Economics Research Center, Iran University of Medical Sciences, Tehran, Iran
3. School of medicine, Dezful University of Medical Sciences, Dezful, Iran
4. Department of Public Health, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran
5. Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
6. Health Metrics Research Center, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran
7. Gastrointestinal & Liver Disease Research Center (GILDRC), Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
8. Oncopathology Research Centre, Iran University of Medical Sciences, Tehran, Iran