[1] Xuzhou Med Univ, Affiliated Lianyungang Hosp, Obstet Dept, Lianyungang, Jiangsu, Peoples R China
[2] Xuzhou Med Univ, Affiliated Lianyungang Hosp, Urol Dept, Lianyungang, Jiangsu, Peoples R China
[3] Xuzhou Med Univ, Clin Lab Dept, Affiliated Lianyungang Hosp, Lianyungang, Jiangsu, Peoples R China