1. Department of Pharmaceutical Chemistry and Technology, Faculty of Pharmaceutical Sciences, Ubon Ratchathani University
2. Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz
3. Department of Chemistry, Faculty of Science, Ramkhamhaeng University
4. Department of Physiology, Faculty of Science, Mahidol University
5. Department of Chemistry, School of Science, University of Phayao