title: Extrafetal development of the axis on the basis of roentgenoanthropometric measurements.
mesh_terms: D000293:Adolescent; D000328:Adult; D000886:Anthropometry; D001368:Axis, Cervical Vertebra / Q000000981:diagnostic imaging / Q000254:growth & development*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011859:Radiography; D012737:Sex Factors