1 Department of Global Health and Public Policy, School of Public Health, Tehran University of Medical Sciences (TUMS), Tehran, Iran. takian@tums.ac.ir.
2 Health Equity Research Center (HERC), Tehran University of Medical Sciences (TUMS), Tehran, Iran. takian@tums.ac.ir.
3 Department of Health Management and Economics, School of Public Health, Tehran University of Medical Sciences (TUMS), Tehran, Iran. takian@tums.ac.ir.
4 Health Equity Research Center (HERC), Tehran University of Medical Sciences (TUMS), Tehran, Iran.
5 Department of Health Management and Economics, School of Public Health, Tehran University of Medical Sciences (TUMS), Tehran, Iran.