PROS1 and endometriosis: Although we evaluated a broad spectrum of inflammatory proteins in plasma samples of patients with different types of endometriosis and controls with several different multifactorial benign gynaecological conditions, both within a well-defined cohort, included detailed protocols, obtained a large set of clinical data, included different nationalities, combined with high throughput methodology and advanced statistical approaches, our results were consistent with several previous studies indicating limited diagnostic potential of circulating cytokines for the diagnosis of endometriosis.