title: [Retrospective trials in surgery: an introduction to terminology and specific problems (author's transl)].
mesh_terms: D006801:Humans; D011446:Prospective Studies; D012189:Retrospective Studies / Q000379:methods*; D013514:Surgical Procedures, Operative
vernacular_title: Retrospektive Studien in der Chirurgie. Eine Einführung in die Terminologie und Problematik.