Zhang, Shu http://orcid.org/0000-0002-1208-5836
Tomata, Yasutake
Tanji, Fumiya
Sugawara, Yumi
Tsuji, Ichiro
Article History
Received: 11 July 2018
Revised: 26 February 2019
Accepted: 28 February 2019
First Online: 2 April 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Consent for publication had been obtained from all participants included in the analyses in the present study.
: Informed consent was obtained from all individual participants included in the study. We considered the return of completed questionnaires to imply consent to participate in the study involving the baseline survey data and subsequent follow-up of death and emigration. We also confirmed information regarding LTCI certification status after obtaining written consent from the subjects. The Ethics Committee of Tohoku University Graduate School of Medicine (Sendai, Japan) reviewed and approved the study protocol. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.