The patterns of differences between women with PCOS and endometriosis are highly concordant with one another: for example, in women without PCOS or endometriosis, higher postnatal serum testosterone has been associated with lower SHBG, longer AGD, higher LH, lower FSH, higher β-endorphin and higher WHR (e.g., [3, 42, 43]). Here, PLOD1 is linked to endometriosis.