Author Contributions: Dr Peters had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Peters, Westheimer, Patel, Hightow-Weidman, Gay.
Acquisition, analysis, or interpretation of data: Peters, Westheimer, Cohen, Hightow-Weidman, Moss, Tsoi, Hall, Fann, Daskalakis, Beagle, Patel, Radix, Foust, Kohn, Marmorino, Pandori, Fu, Samandari, Gay.
Drafting of the manuscript: Peters, Westheimer, Cohen, Hightow-Weidman, Gay.
Critical revision of the manuscript for important intellectual content: Peters, Westheimer, Cohen, Hightow-Weidman, Moss, Tsoi, Hall, Fann, Daskalakis, Beagle, Patel, Radix, Foust, Kohn, Marmorino, Pandori, Fu, Samandari, Gay.
Statistical analysis: Peters, Hall.
Obtained funding: Peters, Westheimer, Moss, Patel, Hightow-Weidman, Samandari, Gay
Administrative, technical, or material support: Hall.
Study supervision: Peters, Westheimer, Cohen, Hightow-Weidman, Moss, Gay.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: This research was supported by a cooperative agreement between the Centers for Disease Control and Prevention (CDC) and the San Francisco Department of Public Health (5U01PS001564), New York City Department of Health and Mental Hygiene (5U01PS001561), and the University of North Carolina at Chapel Hill (5U01PS001559).
Role of the Funder/Sponsor: The CDC approved the design and conduct of the study. The study sponsors had no role in data collection; management, analysis, or interpretation of the data; or preparation of the manuscript. The CDC formally reviewed the submitted manuscript; the study sponsors had no role in the decision to submit the manuscript for publication.
Disclaimer: The findings and conclusions in this manuscript are those of the authors and do not necessarily represent the views of the CDC. The use of trade names and commercial sources is for identification only and does not imply endorsement by CDC.