About the Authors

Karin Magnusson

magnusson_karin@outlook.com

Affiliations National Advisory Unit on Rehabilitation in Rheumatology, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway, Clinical Epidemiology Unit, Orthopaedics, Department of Clinical Sciences Lund, Lund University, Lund, Sweden

Kristine Bech Holte

Affiliation Department of Endocrinology, Oslo University Hospital, Oslo, Norway

Niels Gunnar Juel

Affiliation Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway

Jens Ivar Brox

Affiliations Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway

Kåre Birger Hagen

Affiliation National Advisory Unit on Rehabilitation in Rheumatology, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway

Ida Kristin Haugen

Affiliation Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway

Tore Julsrud Berg

Affiliations Department of Endocrinology, Oslo University Hospital, Oslo, Norway, The Norwegian Diabetics’ Centre, Oslo, Norway, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway

Competing Interests

We declare no conflicts of interests.

Author Contributions

Conceptualization: KM TJB K. B. Hagen IKH NGJ JIB. Data curation: K. B. Holte NGJ JIB TJB IKH KM. Formal analysis: KM K. B. Holte. Funding acquisition: TJB K. B. Hagen KM. Investigation: KM K. B. Holte. Methodology: KM K. B. Holte. Project administration: TJB KM. Resources: TJB NGJ JIB. Validation: IKH TJB K. B. Holte. Writing – original draft: KM. Writing – review & editing: KM TJB K. B. Hagen K. B. Holte IKH NGJ JIB.