Serial maternal nephrosonography in pregnancy.
D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis; D007668:Kidney / Q000033:anatomy & histology*; D007670:Kidney Calices / Q000033:anatomy & histology; D049590:Postpartum Period; D011247:Pregnancy; D013997:Time Factors; D014463:Ultrasonography