Received: 4 October 2020
Revised: 9 January 2021
Accepted: 12 January 2021
First Online: 29 January 2021
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This study was performed in accordance with the 1964 Declaration of Helsinki and its later amendments. The Medical Research Ethics Committee of the University Medical Centre Utrecht provided a waiver for this study.
: The Medical Research Ethics Committee of the University Medical Centre Utrecht waived informed consent for this study, as it is a retrospective study using anonymized patient data.
: All the authors have read an approved the submitted manuscript.