Department of Preclinical Science;
Faculty of Medicine;
Thammasat University;
Pathumthani 12120;
Thailand;
Department of Biochemistry;
Faculty of Medicine;
Chiang Mai University;
Muang;
Chiang Mai 50200;
Thailand;
Department of Pharmacognosy;
Faculty of Pharmacy;
Mahidol University;
Bangkok 10400;
Thailand;
Department of Microbiology;
Faculty of Medicine;
Khon Kaen University;
Khon Kaen 40002;
Thailand;