Text and Data Mining valid from 2018-11-06
Received: 7 May 2018
Accepted: 26 October 2018
First Online: 6 November 2018
Ethics approval and consent to participate
: This study was approved by the Johns Hopkins Review Board. Verbal consent was obtained at the time of the phone interview. Interviews were conducted by phone as participants were dispersed geographically. Recruitment materials outlined voluntary participation, purpose of the research and protections to confidentiality and anonymity.
: 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.