Funding for this research was provided by:
National Institute on Drug Abuse (K23DA034008)
National Institute of Diabetes and Digestive and Kidney Diseases (K23DK109200)
Massachusetts General Hospital (N/A)
Received: 10 August 2017
Accepted: 26 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: All study activities were approved by the Partners Human Research Committee<b>.</b> With the approval of the Partners Human Research Committee, survey participants provided verbal informed consent to participate, which was recorded by the field interviewer in the electronic data capture system. RCT participants provided written informed consent to participate.
: Not applicable.
: TPB receives royalty payments from UpToDate for authorship of a topic review on the health care of homeless people in the United States. NAR has a research grant from and has consulted without pay for Pfizer regarding smoking cessation. NAR receives royalties from UpToDate for authorship of topic reviews on smoking cessation. AY, SAB, SMK, CM, YC, and EGC have no competing interests to report.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.