1. Vestfold Hospital Trust, Tønsberg, Norway; and University of South-Eastern Norway
2. Vestfold Hospital Trust, Tønsberg, Norway; and Norwegian University of Science and Technology (NTNU), Trondheim, Norway
3. Vestfold Hospital Trust, Tønsberg, Norway
4. Vestfold Hospital Trust, Tønsberg, Norway; Norwegian University of Science and Technology (NTNU), Trondheim, Norway; and St Olav’s University Hospital, Trondheim, Norway