1Dubuisson JB, Foulot H, Aubriot FX, et al. Risk factors for ectopic pregnancy in 556 pregnancies after in vitro fertilization:Implication for preventive management[J]. Fertil Steril, 1991, 56(4): 686-690.
2Lesny P, Killick SR, Robinso J, et al. Transcervcal embryo transfer as a risk factor for ectopic pregnancy[J]. Fertil Steril, 1999, 72(2): 305-309.
3Knutzen V,Stratton CJ,Sler G, et al. Mock embryo transfer in the early luteal phase,the cycle before in vitro fertilization and embryo transfer:a descriptive study [J]. Fertil Steril, 1992, 57:156-162.
1WRAMSBY H, FREDGA K, LIEDHILM P. Chromosome amalysis of hum an oocytes recurrence frim preovulatory follicles in stimulated cycle[J]. N Engl Med 1987, 216: 121.
2YARON Y, BOTCHMAN A, AMIT A, et al. Emdometeial receptivity in the light of morden assisted reproductive technology[J]. Fertil Steril, 1994, 62(2): 225.
3CRAIG SS, JOLLIE WP. Age chamges in density of endometrial strkmal cells of the rat[J]. Exp Gevontol, 1985, 20: 93.
4HANZ Z, KONEN GC, ROTH GS. Effect of aging on population of estroge n receptor containing cells in the eat uters[J]. Exp Cell Res, 1989, 180: 234.
5CHETKOWSKI RJ, RODE RA, BURRUEL V, et al. The effect of pinuina ty suppression and the woman's age on embryo viability and uterine recotivityl[J]. Fertil Steril, 1991, 56(6): 1095.
6BORINI A, BIANCHI L, VIOLINI F, et al. Oocyte donation program: pregnancy and implantation rates in woman of different ages sharing oocytes from a single donor[J]. Fertil Steril, 1996, 65(1): 94.