Ll Zhi-mei*; DING Cheng-yun; ZHAO Yong-qing; et al.*Department of Neurology; Beijing Tiantan Hospital; Capital University of Medical Sciences; Beijing 100050; Chin;

• 河北医科大学;首都医科大学北京天坛医院神经内科;河北医科大学第二医院神经内科;河北石家庄;