The authors apologise for their mistakes on page 1 of their article.
The author names should have appeared as follows:
Tien H. Chen#, Ming-Lung Tsai#, Po-Cheng Chang, Hung-Ta Wo, Chung-Chuan Chou, Ming-Shien Wen, Chun-Chieh Wang*, San-Jou Yeh, Delon Wu
And the following sentence should have appeared under the author names and affiliation:
#Tien H. Chen, Ming-Lung Tsai contributed equally to this study.
In addition, the footnote on page 1 is incorrect. It should read as follows:
*Correspondence to: Chun-Chieh Wang, Second Division of Cardiology, Department of Internal Medicine, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, 199 Tung Hwa North Road, Taipei, Taiwan. Tel: 886 3 3281200 ext8115; Fax: 886 3 33281541.