作者机构:[1]Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
相关基金:This work was supported by a grant from the National Natural Science Foundation of China (No. 30971240). The authors have no conflict of interest to declare.
Correspondence to: LI Hong-wei, Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China (Tel: 86-10-63139780. Fax: 86-10-63023261. Email: mcw 19656@yahoo.com.cn)