1. Department of Community Healthcare & Geriatrics; Nagoya University Graduate School of Medicine; Nagoya 466-8550 Aichiken Japan
2. Institute of Innovation for Future Society; Nagoya University; Nagoya 464-0814 Aichiken Japan
3. Department of Cardiology and ICU; Yanbian University Hospital; Yanji 133000 Jilin China
4. Department of Internal Medicine; Kyung Hee University; Seoul 130-702 Korea
5. Department of Public Health; Guilin Medical College; Guilin 541004 Guangxi China
6. Department of Medicine, Brigham and Women's Hospital; Harvard Medical School; Boston MA 20115 USA