1. Division of Cardiology, Montefiore Medical Center, Albert Einstein College of Medicine , 111 East 210th St, Bronx, NY 10467–2401 , USA
2. Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine , Kyoto , Japan
3. Department of Cardiology, Juntendo University Urayasu Hospital , Urayasu , Japan
4. Center for Outcomes Research and Evaluation, Yale New Haven Hospital , New Haven, CT , USA
5. Department of Cardiology, Kawasaki Saiwai Hospital , Kawasaki , Japan
6. Department of Cardiology, Japanese Red Cross Ashikaga Hospital , Ashikaga , Japan
7. Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital , Izunokuni , Japan
8. Department of Cardiology, Aichi Medical University , Nagakute , Japan
9. Division of Cardiology, Teikyo University School of Medicine , Tokyo , Japan
10. Department of Cardiology, Keio University School of Medicine , Tokyo , Japan