[1]Jilin Univ, Hosp 1, Dept Neurol, Changchun 130021, Peoples R China.
[2]Jilin Univ, Hosp 1, Dept Paediat, Changchun 130021, Peoples R China.
[3]Jilin Univ, China Japan Union Hosp, Dept Anesthesia, Changchun 130021, Peoples R China.
[4]Jilin Univ, Cent Lab, China Japan Union Hosp, Changchun 130021, Peoples R China.