Text and Data Mining valid from 2020-04-19
Received: 2 January 2020
Accepted: 14 April 2020
First Online: 19 April 2020
Ethics approval and consent to participate
: The research protocol was approved under the following risk/benefit determination as described in CFR 45 Part 46, Subpart D/21 CFR 50, Subpart D: 45 CFR 46.404/21 CFR 50.51: Research not involving greater than minimal risk. Given that it was a retrospective data analysis with no implications for patient care, the need for informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.