About the Authors

Marit B. Rise

marit.b.rise@ntnu.no

Affiliation Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim, Norway

Anneli Pellerud

Affiliation Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim, Norway

Lisbeth Ø. Rygg

Affiliations Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim, Norway, Helse Nord-Trøndelag Hospital Trust, Levanger, Norway

Aslak Steinsbekk

Affiliation Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AS LØR . Performed the experiments: LØR AP. Analyzed the data: AS LØR AP MBR. Wrote the paper: AP LØR AS MBR.