1. Department of Cardiovascular Medicine, Hyogo Prefectural Amagasaki Hospital
2. Department of Cardiology, Kishiwada City Hospital
3. Division of Cardiology, Cardiovascular Center, Osaka Red Cross Hospital
4. Division of Cardiology, Department of Medicine, Kinki University
5. Department of Cardiovascular Medicine, Kobe City Medical Center General Hospital
6. Department of Cardiovascular Medicine, Hyogo Prefectural Tsukaguchi Hospital