Prospective randomized study of two cryopreservation policies avoiding embryo selection: the pronucleate stage leads to a higher cumulative delivery rate than the early cleavage stage
Objective: To compare the cumulative live birth rates obtained after cryopreservation of either pronucleate (PN) zygotes or early-cleavage (EC) embryos. Design: Prospective randomized study. Setting: University hospital. Patient(s): Three hundred eighty-two patients, involved in an IVF/ICSI program...
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Veröffentlicht in: | Fertility and sterility 2000-11, Vol.74 (5), p.946-952 |
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