Text and Data Mining valid from 2019-12-31
Received: 8 May 2019
Accepted: 8 November 2019
First Online: 31 December 2019
Ethics approval and consent to participate
: The study protocol was approved by the institutional review boards at all sites (Johns Hopkins Medical Institutions, Christiana Care Health System, and the University of Maryland). All patients signed written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.