1. Department of Neurology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
2. Department of Neurology; Chonbuk National University Medical School; Jeonju Korea
3. Department of Neurology; Chonnam National University Medical School; Gwangju Korea
4. Department of Neurology; Dong-A University College of Medicine; Busan Metropolitan Dementia Center; Busan Korea
5. Eisai Co. Ltd; Mumbai India