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参考资料：

[1]Gaitskell K, Green J, Pirie K, et al. Histological subtypes of ovarian cancer associated with parity and breastfeeding in the prospective million women study. Int J Cancer. 2018;142(2):281–289.

[2]Troisi R, Bjørge T, Gissler M, et al. The role of pregnancy, perinatal factors and hormones in maternal cancer risk: a review of the evidence. J Intern Med. 2018;283(5):430–445.

[3]Claudia Main, Xinyue Chen, Min Zhao, Lawrence W Chamley, Qi Chen, Understanding How Pregnancy Protects Against Ovarian and Endometrial Cancer Development: Fetal Antigens May Be Involved, Endocrinology, Volume 163, Issue 11, November 2022, bqac141, https://doi.org/10.1210/endocr/bqac141

[4]张震宇. “生了宝宝就不会痛经了”,是真的吗 [J]. 中国生殖健康, 2018, (08): 13.