1. Department of Anatomy, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
2. Faculty of Medicine, Kasetsart University, Bangkok 10900, Thailand
3. Department of Physiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
4. Chulabhorn International College of Medicine, Thammasat University, Bangkok, Pathum-Thani 12120, Thailand
5. Thammasat University Research Unit in Synthesis and Applications of Graphene, Thammasat University, Pathum-Thani 12120, Thailand