| COH | controlled ovarian stimulation |
| POF | premature ovarian failure |
| IVF | in vitro fertilization |
| ART | artificial reproductive technology |
| CPA | cryoprotective agents |
| ICSI | intra cytoplasmic sperm injection |
| PGD | preimplantation genetic diagnosis |
| PGS | preimplantation genetic screening |
| UKOSS | UK Obstetric Surveillance System |
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