1. Department of Cardiology The Second HospitalCheeloo College of MedicineShandong University Ji’nan China
2. Nursing Department The Second HospitalCheeloo College of MedicineShandong University Ji’nan China
3. Center of Evidence‐Based Medicine The Second HospitalCheeloo College of MedicineShandong University Ji’nan China
4. Research Department The Second HospitalCheeloo College of MedicineShandong University Ji’nan China