4[1]Palermo GD,Joris H,Devroey P,et al.Pregnancies after intracytoplasmic sperm injection of single spermatozoon into an oocyte[J].Lancet,1992,340(8 810):17～18.
5[2]Payne D.Intracytoplasmic sperm injection:Instrumentation and injection technique[J].Reprod Fertil Dev,1995,7(2):185～196.
6[3]Devroey P,Silber S,Nagy Z,et al.Ongoing pregnancies and birth after intracytoplasmic sperm injection with frozen-thawed epididymal spermatozoa[J].Hum Reprod,1995,10(4):903～906.
7[4]Fischer R,Baukloh V,Naether OG,et al.Pregnancy after intracytoplasmic sperm injection of spermatozoa extracted from frozen-thawed testicular biopsy[J].Hum Reprod,1996,11(10):2 197～2 199.
8[5]Palermo GD,Schlegel PN,Colombero LT,et al.Aggressive sperm immobilization prior to intracytoplasmic sperm injection with immature spermatozoa improves fertilization and pregnancy rates[J].Hum Reprod,1996,11(5):1 023～1 029.
9[6]Tesarik J,Sousa M.Key elements of a highly efficient intracytoplasmic sperm injection technique:Ca2+ fluxes and oocyte cytoplasmic dislocation[J].Fertil Steril,1995,64(4):770～776.
10[7]Lewin A,Reubinoff B,Porat-Katz A,et al.Testicular fine needle aspiration:The alternative method for sperm retrieval in non-obstructive azoospermia[J].Hum Reprod,1999,14(7):1 785～1 790.
