1. Cardiovascular Center Dongguk University Ilsan Hospital Goyang South Korea
2. Division of Hematology and Medical Oncology Dongguk University Ilsan Hospital Goyang South Korea
3. Department of Internal Medicine Dongguk University Ilsan Hospital Goyang South Korea
4. Division of Cardiology Department of Internal Medicine Ilsan Paik Hospital Inje University College of Medicine Goyang South Korea
5. Division of Cardiology Yongin Severance Hospital Yonsei University College of Medicine Yongin South Korea
6. Department of Internal Medicine Seoul Red Cross Hospital Seoul South Korea
7. Department of Internal Medicine Seoul Medical Center Seoul South Korea