Funding for this research was provided by:
Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (213006-05-3-SBO20, 213006-05-3-SB110)
Text and Data Mining valid from 2019-11-04
Received: 30 July 2019
Accepted: 15 October 2019
First Online: 4 November 2019
Compliance with ethical standards
: The authors have no conflicts of interest to declare.