[Luo, Haiyan; Wang, Ting; Tang, Wenying; Tang, Ying; Liao, Hongwu] Univ South China, Affiliated Nanhua Hosp, Hengyang Med Sch, Hengyang 421002, Hunan, Peoples R China.
[Wang, Ting; Tang, Wenying; Tang, Ying; Liao, Hongwu] Univ South China, Hengyang Med Sch, Sch Nursing, Hengyang 421002, Hunan, Peoples R China.
[Wang, Ting; Tang, Wenying; Tang, Ying; Liao, Hongwu] Univ South China, Affiliated Nanhua Hosp, Hlth Sch Nucl Ind, Hengyang Med Sch, Hengyang 421002, Hunan, Peoples R China.
[Chen, Qiuyu; Tang, Qiaojin] Univ South China, Affiliated Nanhua Hosp, Dept Gynecol & Matern, Hengyang Med Sch, Hengyang 421002, Hunan, Peoples R China.
[Zhang, Xuehui] Hengyang Maternal & Child Hlth Care Hosp, Hengyang 421001, Hunan, Peoples R China.