Funding for this research was provided by:
National Research Foundation of Korea (NRF-2016R1D1A1A02937456)
Commercialization Promotion Agency for R&D Outcomes in Korea (2018K000370)
Text and Data Mining valid from 2019-08-13
Received: 27 February 2019
Accepted: 16 July 2019
First Online: 13 August 2019
: The authors declare that they have no competing interest.