[1] Hunan Normal Univ, Yueyang Peoples Hosp, Yueyang Hosp, Dept Gynecol, Chongmei Liu 263,Baling East Rd, Yueyang 414000, Hunan, Peoples R China
[2] Yueyang Cent Hosp, Prehosp Emergency Ctr, Yueyang 414000, Hunan, Peoples R China
[3] Miluo Peoples Hosp, Dept Pathol, Yueyang 414000, Hunan, Peoples R China
[4] Pingjiang Cty Maternal & Child Hlth Ctr, Dept Pathol, Yueyang 414000, Hunan, Peoples R China
[5] Hunan Normal Univ, Yueyang Peoples Hosp, Yueyang Hosp, Dept Clin Lab, Yueyang 414000, Hunan, Peoples R China
[6] Miluo Maternal & Child Hlth Ctr, Dept Pathol, Yueyang 414000, Hunan, Peoples R China