In 1997, Wingo et al. reviewed 32 studies on the abortion-breast cancer relationship and concluded that the results of studies on this subject were too inconsistent to allow for definitive conclusions, for either induced or spontaneous abortions.
1997年，Wingo 等人回顾了32项关于堕胎和乳腺癌关系的研究，并得出结论，目前关于该主题的研究结果太不一致，对于自发流产或堕胎都不能得出明确的结论。