1. Ureteropelvic junction anomalies: congenital PUJ problems in children;Churchill,2001
2. Upper tract obstruction;Thomas,2008
3. Ureteropelvic junction obstruction;Yiee,2008
4. Upper tract dilatation;Jayanthi,2006
5. Ultrasound grading of hydronephrosis: introduction to the system used by the Society for Fetal Urology;Fernbach;Pediatr Radiol,1993