Received: 7 November 2019
Accepted: 4 March 2020
First Online: 3 April 2020
Ethics approval and consent to participate
: The protocol (version SD-DXP: 2 06-08-2018) and related documents were approved by the Ethics Committee of the University Hospitals Leuven (S61690, 18 August 2018). Informed consent will be obtained from all study participants.
: Not applicable.
: The study is being funded solely by institutional and departmental sources. In the past, SR received an unrestricted research grant from Air Liquide. The sponsor of this clinical trial is UZ Leuven, Belgium. Neither sponsor or funders have any role in study design, collection/management/analysis/interpretation of data, writing the report, decision to submit the report for publication, and have no authority over any of these activities.