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机译:全国调查的胸部、腹部、腰骶。脊柱放射学、上消化道透视:结果的摘要。
Food and Drug Administration, Silver Spring, MD 20993-0002, USA.;
Thoracic Radiography; spine radiography; Fluoroscopycomputed radiographyRadiographyGastrointestinal TractUnited States Public Health ServiceradiographicDIGITAL RADIOGRAPHYRadiation DosageLumbosacral spineQuality Control;