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Irritable bowel syndrome and chronic fatigue 3 years after acute giardiasis: historic cohort study
  1. Knut-Arne Wensaas1,2,
  2. Nina Langeland3,
  3. Kurt Hanevik3,4,
  4. Kristine Mørch4,5,
  5. Geir Egil Eide1,6,
  6. Guri Rortveit1,2
  1. 1Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway
  2. 2Research Unit for General Practice, Uni Health, Bergen, Norway
  3. 3Institute of Medicine, University of Bergen, Bergen, Norway
  4. 4National Centre for Tropical Infectious Diseases, Haukeland University Hospital, Bergen, Norway
  5. 5Department of Medicine, Unit for Infectious Diseases, Haukeland University Hospital, Bergen, Norway
  6. 6Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
  1. Correspondence to Dr Knut-Arne Wensaas, Research Unit for General Practice, Uni Health, Kalfarveien 31, N-5018 Bergen, Norway; knut-arne.wensaas{at}uni.no

Footnotes

  • Funding An open grant from the Municipality of Bergen covered the cost for production and mailing of the questionnaire and for the services delivered by Statistics Norway. KAW was partly funded by the Norwegian Medical Association's Funds for Research in General Practice. All researchers are independent from the sponsors. The sponsors had no role in study design, in collection, analysis and interpretation of data, or in writing or deciding to submit the manuscript.

  • Competing interests All authors have completed the Unified Competing Interest form at http://www.icmje.org/coi_disclosure.pdf (available on request from the corresponding author) and declare that except for the information stated about funding no authors (1) have received support from any organisation for the submitted work, (2) have any financial relationships with any organisations that might have an interest in the submitted work in the previous 3 years, or (3) have any other relationships or activities that might appear to have influenced the submitted work.

  • Ethics approval This study was approved by the Regional Committee for Medical and Health Research Ethics (project 150.07), and by the Ombudsman for Privacy in Research, Norwegian Social Science Data Services (project 17014).

  • Provenance and peer review Not commissioned; externally peer reviewed.

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Footnotes

  • Funding An open grant from the Municipality of Bergen covered the cost for production and mailing of the questionnaire and for the services delivered by Statistics Norway. KAW was partly funded by the Norwegian Medical Association's Funds for Research in General Practice. All researchers are independent from the sponsors. The sponsors had no role in study design, in collection, analysis and interpretation of data, or in writing or deciding to submit the manuscript.

  • Competing interests All authors have completed the Unified Competing Interest form at http://www.icmje.org/coi_disclosure.pdf (available on request from the corresponding author) and declare that except for the information stated about funding no authors (1) have received support from any organisation for the submitted work, (2) have any financial relationships with any organisations that might have an interest in the submitted work in the previous 3 years, or (3) have any other relationships or activities that might appear to have influenced the submitted work.

  • Ethics approval This study was approved by the Regional Committee for Medical and Health Research Ethics (project 150.07), and by the Ombudsman for Privacy in Research, Norwegian Social Science Data Services (project 17014).

  • Provenance and peer review Not commissioned; externally peer reviewed.

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