1. Fenway Health, Boston, Massachusetts, USA
2. Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
3. Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
4. Harvard Medical School, Boston, Massachusetts, USA
5. Center for Tobacco Control Research and Education, Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, USA
6. Boston Children’s Hospital, Boston, Massachusetts, USA
7. Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA