Observational Study
Copyright ©The Author(s) 2021.
World J Gastrointest Endosc. Oct 16, 2021; 13(10): 518-528
Published online Oct 16, 2021. doi: 10.4253/wjge.v13.i10.518
Figure 3
Figure 3 Study flowchart. PPI: Proton pump inhibitor; NF: Near focus.