1. Department of Cardiovascular Medicine, St. Luke’s International Hospital, Tokyo 104-8560, Japan
2. Leonard Davis Institute for Health Economics, University of Pennsylvania, Philadelphia, PA 19104, USA
3. Department of Nursing, Sakakibara Heart Institute, Tokyo 183-0003, Japan
4. Department of Nursing, Yumino Medical Corporation, Tokyo 171-0033, Japan
5. Department of Nursing, Social Insurance Union of Societies Related to Nursing, Tokyo 150-0001, Japan
6. Department of Nursing, Graduate School of Health Sciences, Kobe University, Kobe 654-0142, Japan
7. Department of Nursing, Aso Iizuka Hospital, Fukuoka 820-8505, Japan
8. Department of Internal Medicine, Tochigi Medical Center, Tochigi 320-8580, Japan
9. Department of Medicine, Kawasaki University of Health and Welfare, Okayama 701-0193, Japan
10. Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
11. Department of Nursing, Japanese Nursing Association, Tokyo 150-0001, Japan