Funding for this research was provided by:
Patient-Centered Outcomes Research Institute (AD-1408-19519)
Text and Data Mining valid from 2018-09-19
Received: 18 April 2018
Accepted: 27 August 2018
First Online: 19 September 2018
Ethics approval and consent to participate
: This research is in compliance with the Helsinki Declaration and was approved by the Institutional Review Boards of the University of North Carolina at Chapel Hill, Durham Veterans Affairs Medical Center, East Carolina University, and Duke University Health System. All study participants provided written informed consent.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.