1. Anomalies of the distal ureter, bladder, and urethra in children: embryologic, radiologic, and pathologic features;Berrocal;Radiographics,2002
2. Radiographic manifestations of the lower urinary tract;Herman;Radiol Clin North Am,1991
3. Imaging of urethral disease: a pictorial review;Kawashima;Radiographics,2004
4. Evaluation and management of voiding disorders in children;Koff;Urol Clin North Am,1988
5. Diagnosis of the congenital urethral anomalies of male child by voiding cystourethrography;Lo;Acta Paediatr Taiwan,1999