1. Faculty of Pharmaceutical Sciences, Khon Kaen University
2. Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University
3. Department of Chemical Technology, Faculty of Science, Chulalongkorn University
4. Department of English, Faculty of Humanities and Social Sciences, Ubon Ratchathani Rajabhat University
5. Sunpasitthiprasong Hospital
6. Faculty of Pharmaceutical Sciences, Ubon Ratchathani University