Distribution of gastrointestinal <a href="https://en.wikipedia.org/wiki/Crohn%27s_disease" class="extiw" title="w:Crohn's disease">Crohn's disease</a>.  Based on data from <a href="https://en.wikipedia.org/wiki/American_Gastroenterological_Association" class="extiw" title="w:American Gastroenterological Association">American Gastroenterological Association</a>.
<a href="https://en.wikipedia.org/wiki/User:Samir_(The_Scope)" class="extiw" title="en:User:Samir (The Scope)">Samir</a>, <a href="https://en.wikipedia.org/wiki/vector_graphics" class="extiw" title="w:vector graphics">vectorized</a> by <a href="//commons.wikimedia.org/wiki/User:Fvasconcellos" title="User:Fvasconcellos">Fvasconcellos</a>
CC BY-SA 3.0
<a href="https://en.wikipedia.org/wiki/Image:Distribution_of_CD_2.jpg" class="extiw" title="w:Image:Distribution of CD 2.jpg">w:Image:Distribution of CD 2.jpg</a>