title: Reply.
authors.affiliation: Division of Cardiology, Department of Internal Medicine, Tainan Municipal Hospital, Tainan, Taiwan, ROC.
authors.forename: I-Chih
authors.initials: IC
authors.lastname: Chen
authors.affiliation: Division of Cardiology, Department of Internal Medicine, National Cheng Kung University College of Medicine and Hospital, Tainan, Taiwan, ROC; Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan, ROC.
authors.forename: Cheng-Han
authors.initials: CH
authors.lastname: Lee
authors.affiliation: Division of Cardiology, Department of Internal Medicine, National Cheng Kung University College of Medicine and Hospital, Tainan, Taiwan, ROC.
authors.forename: Yi-Heng
authors.initials: YH
authors.lastname: Li
authors.affiliation: Division of Cardiology, Department of Internal Medicine, National Cheng Kung University College of Medicine and Hospital, Tainan, Taiwan, ROC. Electronic address: chaoth@mail.ncku.edu.tw.
authors.forename: Ting-Hsing
authors.initials: TH
authors.lastname: Chao