About the Authors

Anne-Sofie Helvik

Anne-Sofie.Helvik@ntnu.no

Affiliations Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, St Olav's University Hospital, Trondheim, Norway, Innlandet Hospital Trust, Division Tynset, Tynset, Norway

Randi Helene Skancke

Affiliations Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, Innlandet Hospital Trust, Division Tynset, Tynset, Norway

Geir Selbæk

Affiliations Centre for Old Age Psychiatric Research, Innlandet Hospital Trust, Ottestad, Norway, Akershus University Hospital, Lørenskog, Norway, The Norwegian Centre for Dementia Research, Oslo University Hospital, Ullevaal, Norway

Knut Engedal

Affiliations The Norwegian Centre for Dementia Research, Oslo University Hospital, Ullevaal, Norway, Faculty of Medicine, University of Oslo, Oslo, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: A-SH RHS GS KE. Performed the experiments: A-SH RHS. Analyzed the data: A-SH KE GS. Contributed reagents/materials/analysis tools: A-SH RHS GS KE. Wrote the paper: A-SH RHS GS KE.