Comparison of Endoscopic Therapies for Small Rectal Neuroendocrine Tumors: Endoscopic Muscularis Superficialis Dissection Versus Endoscopic Submucosal Dissection. - Shu X; Chen X; Ding Y; Yi Y; Li L; Li K; Shi J; Chen Z; Huang X; Chang Y (JGH open : an open access journal of gastroenterology and hepatology, 2026)