Zhao Q, Wang W, Zhang Z, Wang S, Wang M, Zhou J, Gong W, Tan Y, Wang B, Chen G. A genetic variation in APE1 is associated with gastric cancer survival in a Chinese population. Cancer Sci. 2011 Jul;102(7):1293–7. doi: 10.1111/j.1349-7006.2011.01959.x. PMID: 21615620.