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Retrospective Cohort Study
©The Author(s) 2019.
World J Gastroenterol. Sep 7, 2019; 25(33): 4933-4944
Published online Sep 7, 2019. doi: 10.3748/wjg.v25.i33.4933
Figure 1
Figure 1 Consort diagram of landmark analysis. PPI: Proton pump inhibitor.


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