Received: 8 March 2020
Accepted: 13 July 2020
First Online: 22 July 2020
Ethics approval and consent to participate
: The study was approved by the Medical ethics committee of the UZ Brussel - VUB (BUN 143201837046). Given the retrospective nature of the study a written informed consent was not requested by the ethics committee. No administrative permissions were required to access the raw data.
: Not applicable.
: The authors declare that they have no competing interests.