Received: 31 March 2019
Accepted: 4 September 2019
First Online: 5 November 2019
Ethics approval and consent to participate
: Prior informed consent was always verbally obtained before each interview and the Code of Ethics of the International Society of Ethnobiology (ISE 2008) was strictly followed [CitationRef removed].
: Not applicable.
: The authors declare that they have no competing interests.