1. The Pulmonary Center, Boston University Chobanian & Avedisian School of Medicine (BUSM), Boston, MA 02118, USA
2. Center for Healthcare Organization & Implementation Research, VA Boston Healthcare System, Boston, MA 02130, USA
3. National Center for Lung Cancer Screening, Veterans Health Administration, Washington, DC 20422, USA
4. Department of Global Health, Boston University School of Public Health, Boston, MA 02118, USA
5. Evans Department of Medicine and Whitaker Cardiovascular Institute, Boston University Chobanian & Avedisian School of Medicine (BUSM), Boston, MA 02118, USA
6. Research Computing Services, Information Services & Technology, Boston University, Boston, MA 02215, USA