Primary Source #144:

Gravina AG, Federico A, Ruocco E, et al. Crohn's disease and skin. United European Gastroenterol J. 2016;4(2):165-171. doi:10.1177/2050640615597835

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Feel free to use any of the images showcased on this website. Please cite both this website (UNC School of Medicine Dermatology Image Library - http://med.unc.edu/dil) and the primary source of the image as references.
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