7Hussein A, Ozgok Y, Ross L, et al. Clomiphene administration for cases of nonobstructive azoospermia: a multicenter study . J Androl, 2005,26(6) :787 -791.
7Foote S, et al. The human an Y chromsome: overapping DNA clones spanning the euchromatic region. Science 1992; 258: 60
8lnglis JD, et la.A y chromsone gene family with RNA-binding protein homology: can-didlates for the azoospemia factor AZF controlling huaman spematogensis. Cell 1993 ;73:1287
9Riordan JR, et al. ldentifacation of the cystic fibrosis gene:cloning and characterization of complementary DNA.science 1989; 245:1066 - 73
10Liu DY, Baker HWG. Tests of human spem function and fertilization in vitro. Fertil Steril 1992; 58:465