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Observational Study
©The Author(s) 2022.
World J Gastroenterol. Jun 14, 2022; 28(22): 2494-2508
Published online Jun 14, 2022. doi: 10.3748/wjg.v28.i22.2494
Figure 1
Figure 1 Flowchart. 2D-US: Two-dimensional ultrasound.


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