Examples of different approaches to ovarian stimulation used in IVF programs

gnRHa: gonadotropin releasing hormone agonist analogues; hMG: human menopausal gonadotropin; FSH: follicle stimulating hormone; hCG: human chorionic gonadotropin.

Adapted from Barbieri RL. Assisted Reproduction. In Reproductive Endocrinology, 4th edition, Yen SSC, Jaffe RB, Barbieri RL (eds), Saunders, Philadelphia, 1999, p 603.

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