1. From the First Cardiovascular Division (Y.-S.K., Y.-L.K., C.-F.C., S.W., Y.-S.L.), Chang Gung Memorial Hospital; Department of Industrial Design (Y.-C.H.), Chang Gung University, and Department of Internal Medicine (H.-I.Y.), Mackay Memorial Hospital, Mackay Junior College of Nursing, and Taipei Medical University, Taipei, Taiwan, Republic of China; and National Heart and Lung Institute (N.J.S), Imperial College, London, England.