Affiliation: | 1. Research Group of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland;2. Division of Operative care, Oulu University Hospital, Oulu, Finland Medical Research Center Oulu, University of Oulu, Oulu, Finland;3. Department of Infection Control, Oulu University Hospital, Oulu, Finland;4. Medical Research Center Oulu, University of Oulu, Oulu, Finland Division of Intensive Care, Department of Anesthesiology, Oulu University Hospital, Oulu, Finland Research Group of Surgery, Anesthesiology and Intensive Care, Medical Research Center Oulu, Oulu, Finland |