Affiliation: | 1. University of Oulu Graduate School, University of Oulu, Faculty of Medicine, Institute of Health Sciences, Nursing Science, Oulu, Finland;2. Medical Research Center Oulu, Oulu, Finland;3. Division of Intensive Care Medicine, Department of Anesthesia, Oulu University Hospital, Oulu, Finland;4. Department of Anesthesiology, Oulu University Hospital, Oulu, Finland;5. Department of Infection Control, Oulu University Hospital, Oulu, Finland;6. Institute of Health Science, University of Oulu, Medical Research Center Oulu, Oulu, Finland |