1. Department of Nursing Fuwai Central China Cardiovascular Hospital Zhengzhou China
2. Structural Heart Disease Wards Fuwai Central China Cardiovascular Hospital Zhengzhou China
3. Heart Failure Wards Fuwai Central China Cardiovascular Hospital Zhengzhou China
4. Coronary Care Unit Fuwai Central China Cardiovascular Hospital Zhengzhou China
5. Henan International Travel Health Care Center Zhengzhou China