[1] Inner Mongolia Med Univ, Dept Traumat Orthoped, Inner Mongolia Peoples Hosp, Hohhot 010017, Inner Mongolia, Peoples R China
[2] Inner Mongolia Med Univ, Dept Pediat, Affiliated Hosp, North St, Hohhot 010050, Inner Mongolia, Peoples R China
[3] Inner Mongolia Peoples Hosp, Dept Traumat Orthoped, Hohhot 010017, Inner Mongolia, Peoples R China
[4] Inner Mongolia Peoples Hosp, Dept Crit Care Med, Hohhot 010017, Inner Mongolia, Peoples R China