[1] Western Norway Univ Appl Sci, Fac Hlth & Social Sci, Dept Hlth & Caring Sci, Bergen, Norway
[2] Univ Bergen, Ctr Elderly & Nursing Home Med, Dept Global Publ Hlth & Primary Care, Bergen, Norway
[3] Ostfold Hosp Trust, Intens & Postoperat Unit, Sarpsborg, Norway
[4] Ostfold Univ Coll, Fac Hlth & Welf, Fredrikstad, Norway
[5] Haukeland Hosp, Dept Anaesthesia & Intens Care, Bergen, Norway
[6] Haukeland Hosp, Natl Burn Ctr, Dept Plast Hand & Reconstruct Surg, Bergen, Norway