Case Control Study
Copyright ©The Author(s) 2023.
World J Gastrointest Endosc. Mar 16, 2023; 15(3): 146-152
Published online Mar 16, 2023. doi: 10.4253/wjge.v15.i3.146
Figure 1
Figure 1 Survey images. A: Image of mid oesophagus with anterior oesophagus corresponding to “d”; B: Image of mid gastric body with anterior stomach corresponding to “d”; C: Image of the first part of the duodenum with the anterior duodenum corresponding to “d”; D: Image of the second part of the duodenum with the posterior duodenum corresponding to “c”.