In vitro fertilization (IVF) is a process by which an egg is fertilized by sperm outside the body. The process involves monitoring and stimulating a woman ovulatory process, removing ova from the woman ovaries and letting sperm fertilize them in a culture medium in a laboratory. The fertilized egg
( zygote ) is cultured for 2–6 days in a growth medium and is then transferred into the mother  uterus , with the intention of establishing a successful pregnancy

Who need IVF ?