1. Okinawa International University, Okinawa 901-2701, Japan
2. Okinawa Research Center for Longevity Science, Okinawa 901-2114, Japan
3. Pacific Health Research and Education Institute, Honolulu, HI 96813, USA
4. Department of Research, Kuakini Medical Center, Honolulu, HI 96817, USA
5. Department of Research, Planning and Development, The Queen’s Medical Center, Honolulu, HI 96813, USA
6. Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, HI 96817, USA
7. The Institute of Gerontology, University of Georgia, Athens, GA 30602, USA