Text and Data Mining valid from 2020-05-03
Received: 22 July 2019
Accepted: 29 March 2020
First Online: 3 May 2020
Ethics approval and consent to participate
: The study was conducted with integrity according to generally accepted ethical principles and was approved by the PHCC’s independent ethics committee (PHCC/RS/18/02/003). Informed consent was waived due to the retrospective nature of the study.
: Not applicable.