Tomas C, Orava M, Tuomivaara L, et al. Low pregnancy rate is achieved in patients treated with intracytoplasma sperm injection due to previous low or failed fertilization in in vitro fertilization[J]. Hum Reprod, 1998, 13(13): 65-70.
Nagy ZP, Rienzi LF, Ubaldi FM, et al. Effect of reduced oocyte aging on the outcome of rescue intracytoplasmic sperm injection[J]. Fertil Steril, 2006, 85(4): 901-906.
Chen C, Kattera S. Rescue ICSI of oocytes that failed to extrude the second polar body 6 h post insemination in conventional IVF[J]. Hum Reprod, 2003, 18 (10): 2118-2122.
Gianaroli L, Magli MC, Ferraretti AP, et al. Reducing the time of sperm oocyte interaction in human in vitro fertilization improves the implantation rate[J]. Hum Reprod, 1996, 11(1): 166-171.
[10]
Dirnfeld M, Bider D, Koifman M, et al. Shortened exposure of oocytes to spermatozoa improves in vitro fertilization outcome: a prospective randomized controlled study[J]. Hum Reprod, 1999, 14(10): 2562-2564.
[11]
Kattera S, Chen C. Short coincubation of gametes in in vitro fertilization improves implantation and pregnancy rates: a prospective, randomized, controlled study[J]. Fertil Steril, 2003, 80(4): 1017-1021.
