1. Department of CardiologyYokohama Rosai HospitalYokohama Kanagawa Japan
2. Department of Cardiovascular Medicine, Graduate School of Medical SciencesKyushu UniversityFukuoka Fukuoka Japan
3. Department of Cardiology, Faculty of MedicineUniversity of TsukubaTsukuba Ibaraki Japan
4. Department of EpidemiologyUCLA Fielding School of Public HealthLos Angeles California