1. Department of Prosthodontics Faculty of Dentistry Chulalongkorn University Bangkok Thailand
2. Department of Psychiatry Faculty of Medicine Chulalongkorn University Bangkok Thailand
3. Cognitive Impairment and Dementia Research Unit Faculty of Medicine Chulalongkorn University Bangkok Thailand
4. Department of Psychiatry Medical University Plovdiv Plovdiv Bulgaria
5. IMPACT Research Center Deakin University Geelong Vic. Australia