title: The importance of the prone position in the roentgenologic diagnosis of slight mitral disease.
authors.forename: S R
authors.initials: SR
authors.lastname: KJELLBERG
mesh_terms: D006801:Humans; D008943:Mitral Valve / Q000000981:diagnostic imaging*; D016684:Prone Position; D011859:Radiography
keywords: MITRAL VALVE/roentgenography