Dr. Phichamon Khanittanuphong (Hat Yai, Songkhla / TH), Dr. Phatcharin Saetang (Hat Yai, Songkhla / TH), Dr. Polathep Vichitkunakorn (Hat Yai, Songkhla / TH), Kwanjit Soonsuwan (Hat Yai, Songkhla / TH)