Oocyte retrieval
Both study centers grouped the randomized participants and had the oocyte recovery, insemination/embryo transferal. The researcher (who holds a certificate training in ART from Ottawa, Canada, and is an established fertility expert with 9 years of experience in IVF practice) performed the retrieval and transfer with the aid of transvaginal ultrasound to guide the aspiration 34–36 hours after hCG administration using a 17-gauge aspiration needle (Wallace