Received: 14 November 2019
Accepted: 12 August 2020
First Online: 18 August 2020
Ethics approval and consent to participate
: The patients’ capacity to consent was assessed by the nursing home staff, including a physician. Written informed consent was obtained from patients with the capacity to consent or from the legal guardians on behalf of the patients in cases of reduced capacity to consent. The study with reference number 2011/1738 was approved by the Regional Committee for Medical and Health Research Ethics South-east Norway, University of Oslo.
: Not applicable.
: The authors declare that they have no competing interests.