Mass Chest X-Ray |
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| Mass Chest Xray; Mass Chest X Ray; Mass Chest X-Rays; Mass Chest Xrays; X-Ray, Mass Chest; X-Rays, Mass Chest; Xray, Mass Chest; Xrays, Mass Chest | |
| X-ray screening of large groups of persons for diseases of the lung and heart by means of radiography of the chest. | |