1. Department of Surgery; Oulu University Hospital; Oulu Finland
2. Department of Surgery; Kainuu Central Hospital; Kajaani Finland
3. Department of Anesthesiology; Division of Intensive Care Medicine; Oulu University Hospital; University of Oulu; Medical Research Center Oulu; OUH Finland
4. Department of Dermatology; Oulu University Hospital; Oulu Finland
5. Department of Pathology; Oulu University Hospital; Oulu Finland