1. Department of Family and Preventive Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand.
2. Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand.
3. Department of Medical Technology, School of Allied Health Sciences, Walailak University, Tha Sala, Thailand.
4. Research Center of Excellence in Innovation of Essential Oil, Walailak University, Tha Sala, Thailand.