1. Sanbon Hospital, Wonkwang University College of Medicine, Gunpo, Korea (S.-Y.L.).
2. Severance Cardiovascular Hospital, Yonsei University Health System, Seoul, Korea (C.-M.A., J.-S.K., B.-K.K., Y.-G.K., D.C., Y.J., M.-K.H.).
3. Dongsan Medical Center, Keimyung University College of Medicine, Daegu, Korea (H.-J.Y., S.-H.H.).
4. Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Korea (J.-S.K., B.-K.K., Y.-G.K., D.C., Y.J., M.-K.H.).