Funding for this research was provided by:
Helse Sør-Øst RHF
Received: 2 April 2020
Accepted: 8 March 2021
First Online: 26 March 2021
: The Regional committee for medical and health research ethics approved the protocol (2010/2014 REK Sør-Øst D). Patients were enrolled on admission, and written consent was obtained as soon as practically possible. A temporary written consent from the closest relative was obtained when patients were unable to consent. All material was destroyed if patients or relatives did not consent. The committee approved the use of biological material from patients who died before a fully informed consent could be obtained, and the use of written information with the possibility for withdrawal for patients who were transferred to other hospitals or discharged before consent could be obtained, provided that they were checked against the Norwegian national biomedical research reservation registry.
: Not applicable.
: The authors declare that they have no competing interests.