About the Authors

Margareta K. Eriksson

margareta.Eriksson@nll.se

Affiliations Björknäs Primary Health Care Centre, Boden, Sweden, Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden

Paul W. Franks

Affiliation Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden

Mats Eliasson

Affiliations Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden, Department of Medicine, Sunderby Hospital, Luleå, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MKE ME. Performed the experiments: MKE. Analyzed the data: MKE PWF ME. Contributed reagents/materials/analysis tools: MKE ME. Wrote the paper: MKE PWF ME.