Choi, BongKyoo
Article History
Received: 2 September 2019
Accepted: 27 December 2019
First Online: 9 January 2020
Compliance with ethical standards
:
: I declare that I have no conflicts of interest.
: The studies have been approved by the appropriate institutional and/or national research ethics committee and have been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: This study was based on de-identified data from the MIDUS II study in which informed written consent was obtained from all participants.