Yang HY, Ma Y, Lu XH, Liang XH, Suo YJ, Huang ZX, Lu DC, Qin YF, Luo ZJ. The correlation of plasma omentin-1 with insulin resistance in non-obese polycystic ovary syndrome. Ann Endocrinol (Paris). 2015 Oct;76(5):620–7. doi: 10.1016/j.ando.2015.08.002. PMID: 26514948.