Received: 28 December 2017
Accepted: 26 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: Ethics approval was obtained from the University of Texas Southwestern Medical Center Institutional Review Board. Consent to participate is not applicable to this retrospective study which was deemed exempt by the aforementioned Board.
: Consent to publish is also not applicable.
: David H. Johnson is the former Chair of the ABIM Board of Directors and Weifeng Weng is an employee of the ABIM. Otherwise, the remaining authors have no conflicts of interest to disclose relevant to this manuscript.
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