The aim of the research is to evaluate the results of the first in vitro fertilization (IVF) attempt according to the type of embryo culture. From the fertilization to the day 2 transfer, embryos are cultured in standard incubator or in a time lapse technology (TLT). TLT offers an uninterrupted culture environment with a morphokinetic evaluation, whereas culture in standard incubator involves discontinuous morphological embryo evaluation. The principal objective is to compare the live birth rate after the fresh embryo transfer, in a cohort of women less than 39 years-old.
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Live birth rate
Timeframe: Month 9