1. State Key Laboratory of Bioactive Substances and Functions of Natural Medicines; Institute of Materia Medica, Chinese Academy of Medical Sciences; Beijing China
2. Department of Medicinal Chemistry & Pharmacognosy (MC 781) UIC College of Pharmacy; Chicago USA
3. School of Biomedical Sciences, Faculty of Medicine; The Chinese University of Hong Kong; Hong Kong, China
4. Department of Neurosurgery; First Hospital, Jilin University; Changchun China