Fig. 3From: Unraveling the complexity of the molecular pathways associated with polycystic ovary syndrome (PCOS) and identifying molecular targets for therapeutic development: a review of literatureGraphical depiction of the proposed FIGO Ovulatory Disorders Classification System. The types 1, 2, or 3 disorders according to their primary source are hypothalamus, pituitary gland, or ovary, respectively. The PCOS type 4 category is the criteria including clinical, biochemical, hormones, and ultrasound findings [56]Back to article page