1. Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
2. College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China
3. Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States
4. Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100050, PR China