1 Health Policy Research Center at the Mongan Institute, Massachusetts General Hospital, 100 Cambridge Street, Suite 1600, Boston, MA, 02114, USA. epark@mgh.harvard.edu.
2 Health Promotion and Resiliency Intervention Research Program, Massachusetts General Hospital, Boston, MB, USA. epark@mgh.harvard.edu.
3 Tobacco Research and Treatment Center, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA. epark@mgh.harvard.edu.
4 Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA. epark@mgh.harvard.edu.
5 Center for Clinical Management Research, Department of Veterans Affairs, Ann Arbor, MI, USA.
6 Center for Public Health Statistics, University of Iowa College of Public Health, Iowa City, IA, USA.
7 Health Policy Research Center at the Mongan Institute, Massachusetts General Hospital, 100 Cambridge Street, Suite 1600, Boston, MA, 02114, USA.
8 Tobacco Research and Treatment Center, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
9 Department of Epidemiology, The University of Iowa, Iowa City, IA, USA.
10 Optum, Eden Prairie, MN, USA.
11 Department of Health Care Policy, Harvard Medical School, Boston, MA, USA.
12 Division of General Medicine, Brigham and Women's Hospital, Boston, MA, USA.