Funding for this research was provided by:
Ministry of Education (2018R1D1A1B07047572)
Text and Data Mining valid from 2019-01-29
Received: 14 December 2018
Revised: 14 January 2019
Accepted: 17 January 2019
First Online: 29 January 2019
Compliance with Ethical Standards
: Minh Thanh La, Van Hieu Tran, and Hee-Kwon Kim declare that they have no conflict of interest.
: This article does not contain any studies with animals or human participants performed by any of the authors.