[Radiological follow-up of spondylolysis--in 4 cases from the view point of postnatal development].
D000293:Adolescent; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011859:Radiography; D013168:Spondylolisthesis / Q000000981:diagnostic imaging / Q000209:etiology*