36,444
Participants
Start Date
October 31, 2013
Primary Completion Date
November 30, 2016
Study Completion Date
November 30, 2016
Dartmouth College
OTHER
Harvard Pilgrim Health Care
OTHER
University of North Carolina, Chapel Hill
OTHER
University of California, San Francisco
OTHER
University of Wisconsin, Madison
OTHER
Patient-Centered Outcomes Research Institute
OTHER
Kaiser Permanente
OTHER