Breivik Harald
University of Oslo, Faculty of Medicine, Institute of Clinical Medicine, Oslo, Norway; Department of Pain Management and Research, Oslo University Hospital, Oslo, Norway; Department of Anaesthesiology, Oslo University Hospital, Oslo, Norway.
Scand J Pain. 2016 Apr;11:150-152. doi: 10.1016/j.sjpain.2016.02.004. Epub 2016 Feb 27.