[1] Second Mil Med Univ, Changhai Hosp, Clin Res Ctr, Shanghai 200433, Peoples R China
[2] Second Mil Med Univ, Changhai Hosp, Dept Chinese Tradit Med, Shanghai 200433, Peoples R China
[3] Second Mil Med Univ, Changhai Hosp, Dept Obstet & Gynecol, Shanghai 200433, Peoples R China