McDonald, Furman S.
Duhigg, Lauren M.
Arnold, Gerald K.
Hafer, Ruth M.
Lipner, Rebecca S.
Article History
Received: 14 August 2017
Revised: 19 January 2018
Accepted: 14 February 2018
First Online: 7 March 2018
Compliance with Ethical Standards
: The Institutional Review Board of the University of Pennsylvania approved the study.
: All authors are employed by the American Board of Internal Medicine.