1. From the Division of Cardiology, Department of Internal Medicine (Y.-H.J., J.-Y.H., Y.P., S.-J.H., C.H.K) and Department of Laboratory Medicine (I.-S.K), Gyeongsang National University Hospital, Jinju, Korea; and Department of Medicine (S.-W.L., S.-W.P.), Asan Medical Center University of Ulsan College of Medicine, Seoul, Korea.