X-rays and human error.
D003937:Diagnosis, Differential; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*