1. Center for Statistical SciencesBrown University School of Public HealthProvidence Rhode Island
2. Department of EpidemiologyBrown University School of Public HealthProvidence Rhode Island
3. Department of BiostatisticsBrown University School of Public HealthProvidence Rhode Island
4. Beth Israel Deaconess Medical CenterBoston Massachusetts
5. Harvard Medical SchoolBoston Massachusetts
6. Mongan Institute for Health PolicyHarvard Medical SchoolBoston Massachusetts
7. Tobacco Research and Treatment Center, Department of MedicineMassachusetts General Hospital, Harvard Medical SchoolBoston Massachusetts
8. Department of PsychiatryMassachusetts General HospitalBoston Massachusetts
9. University of Wisconsin‐MadisonMadison Wisconsin