title: Roentgenologic investigations of the larynx and trachea.
mesh_terms: D000792:Angiography; D001466:Barium Sulfate; D005471:Fluoroscopy; D006801:Humans; D007830:Larynx / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D013902:Radiography, Thoracic; D014056:Tomography, X-Ray; D014057:Tomography, X-Ray Computed; D014132:Trachea / Q000000981:diagnostic imaging*; D014743:Videotape Recording; D014986:Xeroradiography
chemical_list: D001466:Barium Sulfate