[Zhang, Xin] Hunan Coll Tradit Chinese Med, Affiliated Hosp 1, Dept Pediat, Zhuzhou, Peoples R China.
[Xie, Jiajia] Hunan Univ Chinese Med, Hosp 1, Dept Ultrasound Imaging, Changsha, Peoples R China.
[You, Xiong] Hunan Prov Rehabil Hosp, Ctr Rehabil Diag & Treatment, Changsha, Peoples R China.
[Gong, Houwu] Hunan Univ, Coll Comp Sci & Elect Engn, Changsha, Peoples R China.
[Gong, Houwu] Acad Mil Sci, Mil Med Res Inst, Beijing, Peoples R China.