Fu, Xian-zhi
Article History
Received: 20 December 2020
Accepted: 4 May 2021
First Online: 17 May 2021
Declarations
:
: The study is conducted in accordance with the ethical standards of the institutional and national research committees and with the 1964 Helsinki Declaration and its subsequent revisions or similar ethical standards. Each volunteer participant obtained a written informed consent based on inclusion criteria.
: The author gives consent for publication of this paper in International Journal for Equity in Health.
: The author declares that there are no competing interests.