- School of Pharmaceutical Science, Universiti Sains Malaysia [Ref. Biological & Pharmaceutical Bulletin 21(2) 1998 153-155; Archives of Pharmacal Research (Seoul), 20(6) 1997. 656-658; International Journal of Pharmacognosy, 35(2). 1997. 144-46; Experimental Animals (Tokyo), 46(4). 1997.287-90]