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. 2021 May 22;21:236. doi: 10.1186/s12876-021-01822-5

Fig. 1.

Fig. 1

Study protocol. ESD, endoscopic submucosal dissection; EGD, esophagogastroduodenoscopy; group V, vonoprazan group; group L, lansoprazole; PPI, proton pump inhibitor; i.v., intravenous injection Flow chart of patients. ESD, endoscopic submucosal dissection