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. 2020 Oct 12;48(10):0300060520959220. doi: 10.1177/0300060520959220

Figure 5.

Figure 5.

Schematic of 1:1 case-control matching protocol performed to match the essential confounding parameters for the gallbladder polyp, gallstone, and gallstone and gallbladder polyp groups.

*indicates outcome of each step.