Funding for this research was provided by:
National Research Foundation of Korea (201713030011, 2020R1A2C1013713)
Received: 10 May 2020
Accepted: 6 June 2021
First Online: 15 June 2021
: This study was approved by the Institutional Review Board of Ewha Womans University (No. 148–14). Written informed consent was obtained from either the patients themselves or a family member. Researchers also obtained written consent from nurses who evaluated the participants.
: Not applicable.
: The authors declare that they have no competing interests.