DOI:
10.1055/s-00025476
Endoscopy International Open
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References
Saitoh Y, Obara T, Einami K et al.
Efficacy of high-frequency ultrasound probes for the preoperative staging of invasion depth in flat and depressed colorectal tumors.
Gastrointest Endosc 1996;
44: 34-39
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