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Letter to the Editor

Immortal Time Bias: A Likely Alternate Explanation for the Purported Benefits of DXA Screening in Ulcerative Colitis

Targownik, Laura E MD, MSHS1

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American Journal of Gastroenterology: October 2014 - Volume 109 - Issue 10 - p 1689
doi: 10.1038/ajg.2014.234
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