Polycystic ovary syndrome is causally associated with estrogen receptor-positive instead of estrogen receptor-negative breast cancer: a Mendelian randomization study

Am J Obstet Gynecol. 2020 Oct;223(4):583-585. doi: 10.1016/j.ajog.2020.05.016. Epub 2020 May 13.

¹ Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China; Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
² Department of Ultrasonography, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China.
³ Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Biology Department, College of Arts and Sciences, Boston University, Boston, MA.
⁴ Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China; Department of General Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
⁵ Department of General Surgery, Peking University First Hospital, Beijing, China.
⁶ Department of Ultrasonography, Fifth Affiliated Hospital of Sun Yat-sen University, 52 East Meihua Rd., Zhuhai, Guangdong 519000, China. Electronic address: linyuhong5th@163.com.

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