1. Red Cross College of Nursing, Chung‐Ang University Seoul South Korea
2. Heart and Brain Hospital, Chung‐Ang University Gwangmyeong Hospital Chung Ang University College of Medicine Seoul South Korea
3. Division of Cardiology, Chung‐Ang University Hospital Chung‐Ang University College of Medicine Seoul South Korea
4. Department of Thoracic and Cardiovascular Surgery, Chung‐Ang University Hospital Chung‐Ang University College of Medicine Seoul South Korea
5. Graduate School of Nursing, Chung‐Ang University Seoul South Korea
6. Johns Hopkins University School of Nursing Baltimore Maryland USA