title: [Grid for registration of respiratory movements in two phases on the same film].
authors.forename: G
authors.initials: G
authors.lastname: BIRATH
authors.forename: K
authors.initials: K
authors.lastname: KALLQVIST
mesh_terms: D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D011859:Radiography; D012119:Respiration; D014965:X-Rays