1. CAS Key laboratory of Chemistry of Northwestern Plant Resources and Key laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics; The Chinese Academy of Sciences; Lanzhou P. R. China
2. University of Chinese Academy of Sciences; Beijing P. R. China
3. Institute of Materia Medica; Gansu Academy of Medical Science; Key Laboratory of TCM Pharmacology and Toxicology of Gansu Province; Lanzhou P. R. China