title: [A new example of rational mechanics: spondylolisthesis and childbirth by the natural route].
mesh_terms: D002648:Child; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007223:Infant; D036801:Parturition; D011247:Pregnancy; D011248:Pregnancy Complications; D013168:Spondylolisthesis
keywords: DELIVERY; PREGNANCY/complications; SPONDYLOLISTHESIS/in infancy and childhood