Cheong, Mi Sun
Yoon, Young-Eun
Kim, Jin Wook
Hong, Young Kyu
Kim, Sung Chul
Lee, Yong Bok
Funding for this research was provided by:
Rural Development Administration (PJ01340102)
Article History
Received: 21 November 2019
Accepted: 19 December 2019
First Online: 6 January 2020
Competing interests
: The authors declare that they have no competing interests.