Funding for this research was provided by:
Agency for Healthcare Research and Quality (R18HS021429)
Text and Data Mining valid from 2019-12-01
Received: 25 July 2018
Accepted: 25 November 2019
First Online: 11 December 2019
Ethics approval and consent to participate
: The University of Nebraska Medical Center Institutional Review Board approved this study (protocol number 256–12-EP), including a waiver of informed consent.
: Not applicable.
: The authors declare that they have no competing interests.