1. Department of Cardiovascular Medicine The Affiliated Hospital of Qingdao University Qingdao China
2. Department of Nursing The Affiliated Hospital of Qingdao University Qingdao China
3. Graduate Nursing Program The School of Nursing, Qingdao University Qingdao China
4. Department of Hepatobiliary and Pancreatic Surgery The Affiliated Hospital of Qingdao University Qingdao China
5. Advanced Nursing Practice & Education Department College of Nursing, East Carolina University Greenville North Carolina USA