A retrospective study on the safety, diagnostic yield, and therapeutic effects of endoscopic unroofing for small gastric subepithelial tumors. - Dolak W; Beer A; Kristo I; Tribl B; Asari R; Schöniger-Hekele M; Wrba F; Schoppmann SF; Trauner M; Püspök A (Gastrointestinal endoscopy, 2016)