1. Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
2. Department of Neurological Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, USA
3. Kiel Institute for the World Economy, Kiel, Germany
4. Student Research Center Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
5. Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
6. Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran