Text and Data Mining valid from 2018-10-22
Received: 9 December 2017
Accepted: 10 October 2018
First Online: 22 October 2018
Ethics approval and consent to participate
: Information about the study was given to the residents and their family members. In 2004/2005 the residents were informed that they could refuse to participate at any stage of the study. In 2010/2011 informed consent was obtained. Consent was given by the resident or by their next of kin. These procedures were recommended and approved by the Regional Ethics Committee in the south-east of Norway (reference number REC: 2010/1894) and the Directorate for Health and Social Affairs in 2004 and 2010. The data have been anonymised.
: Not applicable.
: The authors declare that they have no competing interests.
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