Retrospective Study
Copyright ©The Author(s) 2019.
World J Gastrointest Endosc. Sep 16, 2019; 11(9): 477-485
Published online Sep 16, 2019. doi: 10.4253/wjge.v11.i9.477
Figure 1
Figure 1 Flowchart for case extraction of naïve major duodenal papilla from the full population of 4192 cases.