1. Department of Epidemiology, Robert Stempel College of Public Health & Social Work, Florida International University, Miami, FL, USA
2. Syrian Center for Tobacco Studies, Aleppo, Syrian Arab Republic
3. Division of Epidemiology, Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL, USA
4. Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA