2Duell E J, Travier N, Lujan-Barroso L, et al. Menstrual and reproductive factors in women, genetic variation in CYP17A1, and pancreatic cancer risk in the European prospective investigation into cancer and nutrition (EPIC) cohort[J]. Int J Cancer, 2013, 132(9): 2164-2175.
3Park I H, Han H S, Lee H, et al. Resumption or persistence of menstruation after cytotoxic chemotherapy is a prognostic factor for poor disease-free survival in premenopausal patients with early breast cancer[J]. Annals of ontology, 2012, 23(9): 2283-2289.
