1. Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences Beijing China
2. Department of CardiologyChinese PLA 252 Hospital Baoding China
3. Department of CardiologyKaifeng Central Hospital Kaifeng China
4. Department of CardiologyYunnan St. John's Hospital Kunming China
5. Department of CardiologyLiaoning Provincial People's Hospital Shenyang China
6. Department of CardiologyAffiliated Anzhen Hospital of Capital Medical University Beijing China
7. Department of Statistical AnalysisChina Cardiovascular Research Foundation Inc Beijing China
8. Department of CardiologyRadboud University Medical Center Nijmegen The Netherlands