Primary endpoint

ZZ Zhi Zheng
JY Jie Yin
ZL Ziyu Li
YY Yingjiang Ye
BW Bo Wei
XW Xin Wang
YT Yantao Tian
ML Mengyi Li
QZ Qian Zhang
NZ Na Zeng
RX Rui Xu
GC Guangyong Chen
JZ Jie Zhang
PL Peng Li
JC Jun Cai
HY Hongwei Yao
JZ Jun Zhang
ZZ Zhongtao Zhang
SZ Shutian Zhang
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The primary endpoint of this study is the rate of LNM. The scope of potential expanded indications for ESD is explored and evaluated based on the presence of LNM by histopathology and the positive rate of LNM with expanded indications for ESD.

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