[1] China Acad Chinese Med Sci, Inst Basic Res Clin Med, Beijing 100700, Peoples R China
[2] Hong Kong Baptist Univ, Sch Chinese Med, Kowloon, Hong Kong, Peoples R China
[3] Leiden Univ, IBL, Nat Prod Lab, Leiden, Netherlands
[4] London S Bank Univ, Fac Hlth & Social Care, London, England
[5] Kings Coll London, Dept Renal Med, London WC2R 2LS, England