Affiliation: | a University of Turku, Department of Nursing Science, 20014 University of Turku, Finland b University Hospital of Turku, Department of Otorhinolaryngology - Head and Neck Surgery, 20014 University of Turku, Finland c University Hospital of Turku, Department of Otorhinolaryngology - Head and Neck Surgery, Box 52, 20521 Turku, Finland d University of Kuopio, Department of Nursing Science, Finland e University Hospital of Turku, Department of Anaesthesiology, Intensive Care, Emergency Care and Pain Therapy, Box 52, 20521 Turku, Finland f University of Turku, Department of Biostatistics, 20014 University of Turku, Finland g University of Turku, Department of Nursing Science and South-Western Hospital District, 20014 University of Turku, Finland |