1 Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China.
2 Emory University, Atlanta, GA, USA.
3 Dongfang Hospital, Beijing University of Chinese Medicine, No. 6, District 1, Fangxingyuan, Fangzhuang, Fengtai District, Beijing, China. yty0616@hotmail.com.
4 International Society of Pharmacovigilance, London, UK. yty0616@hotmail.com.
5 International Society of Pharmacovigilance, London, UK.