1. Excellent Research Laboratory; Phytomedicine and Pharmaceutical Biotechnology Excellence Center; Faculty of Pharmaceutical Sciences; Prince of Songkla University; Hat Yai Songkhla Thailand
2. Natural Products Research Center of Excellence; Faculty of Science; Prince of Songkla University; Hat Yai Songkhla Thailand
3. Department of Biological Sciences; School of Dental Medicine; Case Western Reserve University; Cleveland OH USA
4. Department of Basic Science; NYU College of Dentistry; New York NY USA
5. Mucosal and Salivary Biology Division; King's College Dental Institute; King's College; London UK
6. University of North Carolina Chapel Hill Schools of Dentistry and Medicine; Chapel Hill NC USA