P. Busarakumtragul, P. Tep-areenan, S. Chainakul and O. Wongsawatkul
International Journal of Pharmacology 6 ( 3 ): 257 - 263 , 2010
S. Prachayasittikul, O. Wongsawatkul, A. Worachartcheewan, S. Ruchirawat and V. Prachayasittikul
International Journal of Pharmacology 6 ( 4 ): 413 - 418 , 2010