L. N. Livera, D. S. Brookfield, J. A. Egginton, J. M. Hawnaur
Livera L N, Brookfield D S, Egginton J A, Hawnaur J M.
Antenatal ultrasonography to detect fetal renal abnormalities: a prospective screening programme.
British Medical Journal 1989; 298 :1421
doi:10.1136/bmj.298.6685.1421