[Fluorography of the chest, esophagus and stomach in mass surveys].
D004947:Esophagus / Q000000981:diagnostic imaging*; D005471:Fluoroscopy; D006801:Humans; D013902:Radiography, Thoracic; D013270:Stomach / Q000000981:diagnostic imaging*
ESOPHAGUS/radiography; FLUOROSCOPY; STOMACH/radiography; THORAX/radiography