1. Internal medicine consultant, Department of Internal Medicine, Loei Hospital, Loei Province, Thailand
2. Neurology registrar, Thai Red Cross Emerging Infectious Diseases - Health Science Centre, World Health Organization Collaborating Centre for Research and Training on Viral Zoonoses, Chulalongkorn Hospital, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
3. Director, Thai Red Cross Emerging Infectious Disease - Health Science Centre, Chulalongkorn Hospital, Chulalongkorn University, Bangkok, Thailand
4. Professor of Neurology, Chulalongkorn Hospital, Chulalongkorn University, Bangkok, Thailand