Authors
1 Department of Pulmonary Medicine,
2 Tobacco Prevention and Control Research Center
3 Department of Pulmonary Medicine
4 Department of Internal Medicine , NRITLD, Shaheed Beheshti University of Medical Sciences and Health Services,
5 Tobacco Prevention and Control Research Center,
6 Department of Epidemiology and Biostatistics, Institute of Public Health, Tehran University of Medical Sciences and Health Services, TEHRAN-IRAN.
Abstract
Keywords