Low back pain and x-rays.
D001416:Back Pain / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008161:Lumbosacral Region / Q000002:abnormalities / Q000000981:diagnostic imaging*; D011859:Radiography; D013122:Spinal Diseases / Q000000981:diagnostic imaging; D013131:Spine / Q000000981:diagnostic imaging*