Kubo, Yoshiaki http://orcid.org/0000-0002-3946-916X
Okada, Isamu
Article History
Received: 7 December 2021
Accepted: 30 August 2022
First Online: 9 September 2022
Competing interests
: The authors declare no competing interests.
: Institutional review boards approved this study at Ritsumeikan University (#衣笠-人-2020-35), Institute of Developing Economies, Japan External Trade Organization (IDE-JETRO), and the University of the Ryukyus (#32), Japan.
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