[4] Chaung S S, Lin C C, Lin J, et al. Phytotherapy Research, 2003, 17(7): 784.
[5] Yamashiro S, Noguchi K, Matsuzaki T, et al. Pharmacology, 2003, 67(3): 128.
[6] Aniya Y, Miyagi C, Nakandakari A, et al. Phytomedicine, 2002, 9(3): 239.
[7] Asen S, Plimmer J. Phytochemistry, 1972, 11(8): 2601.
[8] Ross S A, Bishay D W. Herba Polonica, 1984, 30(2): 91.
[9] Lin L C, Kuo Y C, Chou C J. Planta Medica, 2000, 66(4): 333.
[10] Bashir A K, Abdalla A A, Wasfi I A, et al. International Journal of Pharmacognosy, 1994, 32(4): 366.