[1] China Med Univ, Affiliated Hosp 1, Dept Gynecol, 155 Nanjing St, Shenyang 110001, Liaoning, Peoples R China
[2] Huazhong Univ Sci & Technol, Tongji Med Coll, Union Hosp, Dept Gynecol & Obstet, Wuhan 430022, Hubei, Peoples R China
[3] China Med Univ, Shenyang 110122, Liaoning, Peoples R China
[4] China Med Univ, Shengjing Hosp, Rehabil Ctr, Shenyang 110134, Liaoning, Peoples R China