Fatigue symptoms in relation to neuroticism, anxiety-depression, and musculoskeletal pain. A longitudinal twin study

• Olav Vassend ,

  Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – original draft, Writing – review & editing

  * E-mail: olav.vassend@psykologi.uio.no

  Affiliation Department of Psychology, University of Oslo, Oslo, Norway

  http://orcid.org/0000-0001-8630-1645

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• Espen Røysamb,

  Roles Methodology, Writing – review & editing

  Affiliations Department of Psychology, University of Oslo, Oslo, Norway, Norwegian Institute of Public Health, Oslo, Norway

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• Christopher Sivert Nielsen,

  Roles Conceptualization, Writing – review & editing

  Affiliations Norwegian Institute of Public Health, Oslo, Norway, Department of Pain Management and Research, Oslo University Hospital, Oslo, Norway

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• Nikolai Olavi Czajkowski

  Roles Formal analysis, Methodology, Software, Writing – review & editing

  Affiliations Department of Psychology, University of Oslo, Oslo, Norway, Norwegian Institute of Public Health, Oslo, Norway

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