1. Department of Public Health and Nursing Faculty of Medicine and Health Sciences Norwegian University of Science and Technology Trondheim Norway
2. Department of Dermatology St Olav's Hospital Trondheim University Hospital Trondheim Norway
3. Clinic of Anaesthesia and Intensive Care St Olav's Hospital Trondheim University Hospital Trondheim Norway
4. Department of Cancer Research and Molecular Medicine Faculty of Medicine and Health Sciences Norwegian University of Science and Technology Trondheim Norway