1. Chulabhorn Research Institute; Kamphaeng Phet 6 Road Bangkok 10210 Thailand
2. School of Science; Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
3. Chulabhorn Graduate Institute and Center for Environmental Health and Toxicology; Kamphaeng Phet 6 Road Bangkok 10210 Thailand