1. Department of Medicine, Faculty of Medicine Chulalongkorn University Bangkok Thailand
2. Chulalongkorn Headache and Orofacial Pain (CHOP) Service and Research Group Chulalongkorn University Bangkok Thailand
3. Department of Physiology, Faculty of Medicine Chulalongkorn University Bangkok Thailand
4. Chula Neuroscience Center King Chulalongkorn Memorial Hospital Bangkok Thailand
5. Department of Medicine, Faculty of Medicine King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand
6. Division of Neurology, Department of Medicine, Faculty of Medicine Chulalongkorn University Bangkok Thailand
7. Department of Pharmacology, Faculty of Medicine Chulalongkorn University Bangkok Thailand