Validity of Diagnostic Codes and Prevalence of Physician-Diagnosed Psoriasis and Psoriatic Arthritis in Southern Sweden – A Population-Based Register Study

• Sofia Löfvendahl ,

  * E-mail: Hsofia.lofvendahl@med.lu.se

  Affiliations Department of Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden, Epidemiology and Register Centre South, Skåne University Hospital, Lund, Sweden

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• Elke Theander,

  Affiliation Department of Rheumatology, Skåne University Hospital Malmö, Lund University, Malmö, Sweden

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• Åke Svensson,

  Affiliation Department of Dermatology, Skåne University Hospital Malmö, Lund University, Malmö, Sweden

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• Katarina Steen Carlsson,

  Affiliation Department of Clinical Sciences, Malmö, Lund University, Skåne University Hospital Malmö, Sweden

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• Martin Englund,

  Affiliations Department of Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden, Epidemiology and Register Centre South, Skåne University Hospital, Lund, Sweden, Clinical Epidemiology Research & Training Unit, Boston University School of Medicine, Boston, Massachusetts, United States of America

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• Ingemar F. Petersson

  Affiliations Department of Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden, Epidemiology and Register Centre South, Skåne University Hospital, Lund, Sweden, Arthritis Research UK Primary Care Centre, Keele University, United Kingdom

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