Inflammatory Bowel Disease in South Limburg (the Netherlands) 1991–2002: Incidence, diagnostic delay, and seasonal variations in onset of symptoms  Mariëlle J.L. Romberg-Camps, Martine A.M. Hesselink-van de Kruijs, Leo J. Schouten, Pieter C. Dagnelie, Charles B. Limonard, Arnold D.M. Kester, Laurens P. Bos, Jelle Goedhard, Wim H.A. Hameeteman, Frank L. Wolters, Maurice G.V.M. Russel, Reinhold W. Stockbrügger  Journal of Crohn's and Colitis  Volume 3, Issue 2, Pages 115-124 (June 2009) DOI: 10.1016/j.crohns.2008.12.002 Copyright © 2009 Terms and Conditions

Figure 1 Standardized incidence rates per 100,000 person-years, 1991–2002, based on the 3-years moving average. Journal of Crohn's and Colitis 2009 3, 115-124DOI: (10.1016/j.crohns.2008.12.002) Copyright © 2009 Terms and Conditions

Figure 2 Age-specific standardized incidence rates per 100,000 person-years 1991–2002. Journal of Crohn's and Colitis 2009 3, 115-124DOI: (10.1016/j.crohns.2008.12.002) Copyright © 2009 Terms and Conditions

Figure 3 Overall variation per month in onset of symptoms for CD, UC and IC (n=1122). Journal of Crohn's and Colitis 2009 3, 115-124DOI: (10.1016/j.crohns.2008.12.002) Copyright © 2009 Terms and Conditions