Esophageal Endoscopic Submucosal Dissection Assisted by an Overtube with a Traction Forceps: An Animal Study

Table 1

Profile of each ESD operator enroll1ed in this study.

	Beginners				Experts
	T. N.	M. Y.	H. H.	A. O.	T. I.	H. C.	Y. T.	K. O.
Endoscopic experience, years	9	8	10	5	5	6	6	12
Gastric ESDs performed, number	5	30	30	50	150	150	200	1500
Esophageal ESDs performed, number	0	2	0	1	50	50	30	150

Beginners were defined as operators with limited experience performing esophageal ESDs. Experts were defined as operators who had performed more than 30 esophageal ESDs and more than 150 gastric ESDs.