1. Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center , Washington, DC, USA
2. Department of Biostatistics, Bioinformatics, and Biomathematics, Georgetown University Medical Center , Washington, DC, USA
3. Behavioral Health, Westat , Rockville, MD, USA
4. School of Global Public Health, New York University , New York, NY, USA
5. Department of Epidemiology, University of Michigan , Ann Arbor, MI, USA
6. Department of Pulmonary and Sleep Medicine, Georgetown University Medical Center , Washington, DC, USA