A. Zellweger

Extra-intestinal Manifestations at Diagnosis in Paediatric- and Elderly-onset Ulcerative Colitis are Associated With a More Severe Disease Outcome: A Population-based Study

P. Varlet, I. Iwanicki-Caron, C. Elie, 2017, Journal of Crohn's & colitis.

Impact of Extra-Intestinal Manifestations at Diagnosis on Disease Outcome in Pediatric- and Elderly-Onset Crohn's Disease: A French Population-Based Study.

J. Ledent, P. Varlet, I. Iwanicki-Caron, 2018, Inflammatory bowel diseases.

Ulcerative proctitis is a frequent location of paediatric-onset UC and not a minor disease: a population-based study

I. Iwanicki-Caron, F. Vasseur, G. Savoye, 2016, Gut.