title: [The reducing lens: usefulness of a simple instrument in thoracic radiology].
authors: Istituto di Radiodiagnostica, Università Cattolica del Sacro Cuore, Policlinico A. Gemelli, Roma.
authors: A
authors: A
authors: Cianfoni
authors: P
authors: P
authors: Stark
mesh_terms: D006801:Humans; D007909:Lenses; D013902:Radiography, Thoracic / Q000295:instrumentation*; D012684:Sensory Thresholds; D014796:Visual Perception