title: Introduction.
authors.affiliation: Regenstrief Institute, United States.
authors.forename: Jon
authors.initials: J
authors.lastname: Duke
authors.affiliation: University of Minnesota, Health Policy and Management, 420 Delaware St. SE, MMC 729 2211 Buchanan St. NE, Minneapolis, MN 55418, United States. Electronic address: mccu0056@umn.edu.
authors.forename: Jeffrey Scott
authors.initials: JS
authors.lastname: McCullough
authors.affiliation: University of Washington, Department of Medicine, United States.
authors.forename: Leah
authors.initials: L
authors.lastname: Marcotte
authors.affiliation: Brigham and Women's Hospital, Division of General Medicine and Primary Care, United States.
authors.forename: Michael
authors.initials: M
authors.lastname: Barnett
authors.affiliation: Harvard University, United States.
authors.forename: Khin-Kyemon
authors.initials: KK
authors.lastname: Aung