Basic Aspects (mechanisms of action, design, synthesis, side effects, sites of action, cytotoxic radicals) o Delivery Systems (microcapsules, implants, sustained release formulations) o Characteristics of GnRH Antagonists (4 chapters) o SteroidReplacement During Analog Treatment (leiomyomas, endometriosis, hyperandrogenism) o Cancer (prostate, breast, ovarian, endometrial) o Ovulation Induction (4 chapters) o Preparation for Surgery in Leiomyoma Patients (3 chapters) o Other Applications(uterine bleeding, precocious puberty, hormonal male contraception) o Index.