Author Correction: Clinical outcomes of endoscopic resection of preoperatively diagnosed non-circumferential T1a-muscularis mucosae or T1b-submucosa 1 esophageal squamous cell carcinoma. - Namikawa K; Yoshio T; Yoshimizu S; Ishiyama A; Tsuchida T; Tokai Y; Horiuchi Y; Hirasawa T; Fujisaki J (Scientific reports, 2021)