Funding for this research was provided by:
Received: 8 April 2020
Accepted: 12 October 2020
First Online: 21 October 2020
Ethics approval and consent to participate
: The BIOS study has been approved by the Medical Ethics Committee Brabant (NL50258.028.14) and all participants and proxy informants signed informed consent for participation.
: Not applicable.
: The author(s) declare(s) that they have no competing interests.