1. Department of Cardiovascular Medicine, Graduate School of Biomedical Sciences, Nagasaki University
2. Department of Internal Medicine, Michinoo Hospital
3. Department of Internal Medicine, Nagasaki Saiseikai Hospital
4. Department of Internal Medicine, Ekisaikai Nagasaki Hospital
5. Department of Internal Medicine, Isahaya Memorial Hospital
6. Department of Cardiovascular Medicine, Nagasaki Rousai Hospital