Self-study of the non-extension sign in an e-learning program improves diagnostic accuracy of invasion depth of early gastric cancer.
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Kato M, et al. Among authors: nomura t.
Endosc Int Open. 2019 Jul;7(7):E871-E882. doi: 10.1055/a-0902-4467. Epub 2019 Jul 3.
Endosc Int Open. 2019.
PMID: 31286056
Free PMC article.
