1Davis HJ, Cian LG. Positive pressure ure- thrography: a new diagnostic method [ J ]. J Urol, 1956,75 : 753-757.
2Golomb J, Leibovitch I , Mor Yet al. Com- parison of voiding cystourethrography and double-ballon urethrography in the diagno- sis of compoex female urethral diverticula [J]. Eur Radiol, 2003, 13: 536-542.
3Rufford J,Cardozo L. Urethral diverticula :a diagnostic dilemma [J]. BJU Int , 2004,94:1044-1047.