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Kelstrup, Anne Mette; Juillerat, Pascal; Korzenik, Joshua (2014). The accuracy of self-reported medical history: A preliminary analysis of the promise of internet-based research in Inflammatory Bowel Diseases. Journal of Crohn's & Colitis, 8(5), pp. 349-356. Elsevier 10.1016/j.crohns.2013.09.012