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In all, 1210 treatment cycles were divided into three categories for retrospective analysis according to the period of delay between oocyte retrieval (occurring at a fixed time after human chorionic gonadotrophin) and intracytoplasmic sperm injection (ICSI) of <3 h, 3–5 h, >5 h (referred to as ‘delayed ICSI’). Three stages from oocyte to the birth of a live baby were identified for statistical...
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