Manual of Embryo Selection in Human Assisted Reproduction

"When fertilization in vitro was developed by the pioneers, Dr. Robert G. (Bob) Edwards, Miss Jean Purdy, and Dr. Patrick Steptoe, their primary focus was to obtain oocytes that could be successfully fertilized in laboratory conditions. Embryo culture and embryo selection were just secondary aims at that time. In the early 1970s, the first attempts to obtain a pregnancy after IVF were in cycles in which ovarian stimulation was performed by administration of human menopausal gonadotropins (hMG)"--