2Seo J T, Ko W J. Predictive factors of successful testieular sperm recovery in non - obstructive azoospermia patients [ J ]. Intl J Androl, 2001,24(5) :306 -310.
3Schlegel P N, Palermo G D, Goldstein M, et al. Testicular sperm extraction with intracytoplasmlc sperm injection for nonobstrucfive Azoospermia [ J ]. Urology, 1997,49 (3) :435 - 440.
4Dada R, Gupta NP, Kucheria K. Molecular screening for Yq microdeletion in men with idiopathic oligozoospermials and azoospermia[ J]. J Biosci ,2003,28 (2) : 163 - 168.