作者机构:[1]Department of Respiratory Medicine, Changzheng Hospital,Second Military Medical University, Shanghai 200003, China
相关基金:This study was supported by grants from the National Natural Science Foundation of China (No. 30900660, No. 30871134 and No. 81172227) and Shanghai Committee of Science and Technology of China (No. 08JC1407600). Conflict of interests: None.
Correspondence tO: Dr. XIU Qing-yu, Department of Respiratory Medicine, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China (Tel: 86-13816584620. Fax: 86-21-81885325. Email: doctorxiuqy@ 163.com)