1. Department of Cardiology; St. Luke's International Hospital; Tokyo Japan
2. St. Luke's International University Library; Tokyo Japan
3. Department of Internal Medicine; Okinawa Chubu Hospital; Okinawa Japan
4. Department of Internal Medicine; St. Luke's International Hospital; Tokyo Japan
5. Kidney Center; St. Luke's International Hospital; Tokyo Japan
6. Infectious Diseases Department; St. Luke's International Hospital; Tokyo Japan