Funding for this research was provided by:
Japan Society for the Promotion of Science grant-in-aid (15H05244)
Text and Data Mining valid from 2018-08-29
Received: 22 January 2018
Accepted: 1 August 2018
First Online: 29 August 2018
Ethics approval and consent to participate
: The research was conducted in compliance with the Code of Ethics of the American Anthropological Association and the International Society of Ethnobiology Code of Ethics 76. Oral prior informed consent was acquired before all interviews. No ethical committee permits were required.
: Not applicable.
: The authors declare that they have no competing interests.
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