Table 2. ESD procedure speed for each location.

		Total procedure speed, median (range), min/cm 2	Dissection speed, median (range), min/cm 2
Upper portion	Lesser curvature	32 (25–40)	51 (47–57)
	Greater curvature	25 (24–29)	44 (31–48)
	Anterior wall	32 (31–40)	67 (57–79)
	Posterior wall	33 (31–44)	65 (55–77)
Middle portion	Lesser curvature	34 (33–36)	66 (62–73)
	Greater curvature	23 (22–38)	37 (34–38)
	Anterior wall	36 (32–45)	63 (51–79)
	Posterior wall	31 (24–34)	57 (44–68)
Lower portion	Lesser curvature	44 (27–44)	66 (42–76)
	Anterior wall	28 (26–31)	44 (42–46)
	Posterior wall	26 (23–27)	40 (38–41)