Zhang X, Xin X, Zhang J, Li J, Chen B, Zou W. Apurinic/Apyrimidinic Endonuclease 1 Polymorphisms Are Associated With Ovarian Cancer Susceptibility in a Chinese Population. International Journal of Gynecological Cancer. 2013 Oct;23(8):1393–9. doi: 10.1097/igc.0b013e3182a33f07.