Endometriosis (the presence of endometrial-like tissue or ‘lesions’ outside the uterus) is a chronic inflammatory disease affecting 6-10% of reproductive age women. It is associated with pelvic pain, painful periods, pain with sexual intercourse, and subfertility. The socioeconomic impacts of endometriosis are considerable. The recent WERF EndoCost study (a worldwide cost-of-illness study) reporte ...