参考
1. Effmann E, Lebowitz R, Colodny A. Duplication of the Urethra. Radiology. 1976;119(1):179-85. doi:10.1148/119.1.179 - Pubmed
2. Currarino G. Large Prostatic Utricles and Related Structures, Urogenital Sinus and Other Forms of Urethrovaginal Confluence. J Urol. 1986;136(6):1270-9. doi:10.1016/s0022-5347(17)45311-0