1. NT Hop WC KP Mild renal pyelectasis in the second trimester : determination of cut - off levels for postnatal referral Ultrasound;Cohen;Obstet Gynecol,2005
2. Antenatal diagnosis of urinary tract abnormalities by ultrasonography after weeks gestation incidence outcome;Gunn;Am J Obstet Gynecol,1995
3. Structural genitourinary defects detected in utero;Mandell;Radiology,1991
4. Fetal hydronephrosis prevalence natural and postnatal consequences in an unselected population;Ek;history Acta Obstet Gynecol Scand,2007
5. Prenatal mild pyelectasis : evaluating the thresholds of renal pelvic diameter associated with normal postnatal renal function Ultrasound;Odibo;Med,2004