aHealth Management and Social Development Research Center, Golestan University of Medical Sciences, Gorgan, Iran
bClinical Tuberculosis and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
cHealth Management and Economics Research Center, Iran University of Medical Sciences, Tehran, Iran
dSchool of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Copyright ©2017, Korea Centers for Disease Control and Prevention
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CONFLICTS OF INTEREST
No potential conflict of interest relevant to this article was reported.