Text and Data Mining valid from 2020-01-13
Received: 11 July 2019
Accepted: 13 December 2019
First Online: 13 January 2020
Ethics approval and consent to participate
: This was part of a quality improvement project and our local ethics board at Northwestern University ruled that IRB approval was not needed and consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.