title: Are randomized control studies needed to evaluate the efficacy of treatment techniques that are clearly minimally invasive and already widely used?
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Takuji
authors.initials: T
authors.lastname: Gotoda
authors.affiliation: Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Waku
authors.initials: W
authors.lastname: Hatta
mesh_terms: D006801:Humans; D019060:Minimally Invasive Surgical Procedures; D016896:Treatment Outcome