[1] Huazhong Univ Sci & Technol, Tongji Med Coll, Family Planning Res Inst, Wuhan 430074, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, Tongji Med Coll, Dept Urol, Tongji Hosp, Wuhan 430074, Hubei, Peoples R China
[3] Yichang Cent Hosp, Dept Urol, Yichang, Hubei, Peoples R China