Fu L, Dai L, Li X, Zhang K, Bai Y. Association of methylenetetrahydrofolate reductase gene C677T polymorphism with polycystic ovary syndrome risk: a systematic review and meta-analysis update. European Journal of Obstetrics & Gynecology and Reproductive Biology. 2014 Jan;172():56–61. doi: 10.1016/j.ejogrb.2013.10.001.
Association of methylenetetrahydrofolate reductase gene C677T polymorphism with polycystic ovary syndrome risk: a systematic review and meta-analysis update