[Xia, Dongping] Hunan Agr Univ, Coll Publ Adm & Law, Changsha, Peoples R China.
[Gong, Rengui] Anhui Univ Technol, Sch Publ Management & Law, Maanshan, Peoples R China.
[Hu, Yangming; Hu, YM] Hunan Normal Univ, Sch Publ Adm, Changsha, Peoples R China.
[Hu, Zan] Univ South China, Affiliated Changsha Cent Hosp, Hengyang Med Sch, Changsha, Peoples R China.
[Xiang, Hua] Hengyang Med Sch, Maternal & Child Hlth Hosp Changsha Cty, Changsha, Peoples R China.