Park, In Hye http://orcid.org/0000-0001-5180-1308
Sya’bandari, Yustika http://orcid.org/0000-0002-3432-1203
Liu, Yang http://orcid.org/0000-0002-5453-5604
Article History
Received: 5 February 2021
Accepted: 30 August 2021
First Online: 9 November 2021
Declarations
:
: The ethics approval including participants’ approach and recruitment were granted by the Chungnam National University, Research Center, Republic of Korea (Project Number 2012-86), We confirm that all methods were performed in accordance with the relevant guidelines and regulations by including a statement in the ethics approval and consent to participate section. We provided the elderly with a letter of introduction and an information sheet about the research, the informed consent was obtained from all participants.
: Not applicable.
: The authors declared no competing interests.