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. 2007 Dec 21;1(1):157–161. doi: 10.1159/000112654

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Copyright © 2007 by S. Karger AG, Basel

This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial-No-Derivative-Works License (http://creativecommons.org/licenses/by-nc-nd/3.0/). Users may download, print and share this work on the Internet for noncommercial purposes only, provided the original work is properly cited, and a link to the original work on http://www.karger.com and the terms of this license are included in any shared versions.

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Fig. 1 — a Colonoscopic finding before PEG-IFN-α-2a administration showing reddish and edematous mucosa with multiple erosions through the entire colon. b Colonoscopic finding three months after PEG-IFN-α-2a administration showing normal colonic appearance.