1 Department of Gynecology and Obstetrics, The Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Yanjiang Road 107#, Guangzhou, 510060, Guangdong Province, China.
2 Department of Hepatobiliary Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
3 Department of Gynecology and Obstetrics, The Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Yanjiang Road 107#, Guangzhou, 510060, Guangdong Province, China. zheling76@163.com.
4 Department of Gynecology and Obstetrics, The Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Yanjiang Road 107#, Guangzhou, 510060, Guangdong Province, China. zhangjianping0312@163.com.