[1] Inner Mongolia Med Univ, Affiliated Hosp, PRK Ctr, Tongdao North St, Hohhot 010050, Peoples R China
[2] Inner Mongolia Med Univ, Jinshan Ave, Hohhot 010110, Peoples R China
[3] Inner Mongolia Med Univ, Affiliated Hosp 2, Emergency Dept, Horqin South Rd, Hohhot 010090, Peoples R China