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APA Citation
Litleskare, S., Wensaas, K., Eide, G., Hanevik, K., Kahrs, G., Langeland, N., & Rortveit, G. (2015). perceived food intolerance and irritable bowel syndrome in a population 3 years after a giardiasis-outbreak: a historical cohort study. BMC gastroenterology, 15(1), 1–9. http://access.bl.uk/ark:/81055/vdc_100080346935.0x00014d