Received: 20 July 2020
Accepted: 5 October 2020
First Online: 21 October 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Ethics Committee of Fukuoka University and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study protocol was approved by the Institute Research Committee and Institute Ethics Committee Fukuoka University (IRB number. U20–06-006).
: Not applicable.
: The author declare that they have no competing interests.