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El-Toukhy, T., Wharf, E., Walavalkar, R., Singh, A., Bolton, V., Khalaf, Y. and Braude, P. (2011) Delayed Blastocyst Development Does Not Influence the Outcome of Frozen-Thawed Transfer Cycles. International Journal of Obstetrics & Gynaecology, 118, 1551-1556.
https://doi.org/10.1111/j.1471-0528.2011.03101.x

has been cited by the following article:

• TITLE: Comparison of Pregnancy Outcomes of High-Quality D5- and D6-Blastocyst Transfer in Hormone-Replacement Frozen-Thawed Cycles

  AUTHORS: Weijie Xing, Liuhong Cai, Li Sun, Jianping Ou

  KEYWORDS: Frozen Cycle, Hormone Replacement Therapy, Blastocyst Transfer

  JOURNAL NAME: International Journal of Clinical Medicine, Vol.8 No.11, November 15, 2017

  ABSTRACT: This study aimed to assess pregnancy outcomes after high-quality D5- and D6-blastocyst transfer in frozen cycles of in vitro fertilization and embryo transfer and to further evaluate whether there was a difference in blastocyst development potentials with different developmental speeds and in pregnancy outcomes. A retrospective analysis was conducted to analyze 247 frozen cycles in our center from September 2015 to July 2017, which were divided into two groups: a D5-FET group with 193 cycles of D5-blastocyst transfer, and a D6-FET group with 54 cycles of D6-blastocyst transfer. Hormone replacement method was utilized to prepare frozen-cycle endometria. Pregnancy outcomes were analyzed and compared between these two groups. The mean ages of the two groups were 31.45 ± 4.43 years and 31.98 ± 4.84 years, respectively, with no statistically significant differences (P > 0.05). The difference in the endometrial thickness during transfer was also not statistically significant. The implantation rate in the D5-FET group was 60.13%, significantly higher than that in the D6-FET group (31.58%, P P