<qa>  What is Labotect embryo transfer catheter?All ET will be performed on day 3 after oocyte retrieval at the blastocyst stage by one operator under trans-abdominal US guidance performed by one physician, without any anesthesia or sedation with moderate bladder filling. Two embryos will be transferred using the same type of catheter which is Labotect embryo transfer catheter. Its a semirigid catheter thats less likely to induce endometrial trauma and uterine contractions. 