Lee, Hye-In
Byeon, Ji-Young
Kim, Young-Hoon
Lee, Choong-Min
Choi, Chang-Ik
Jang, Choon-Gon
Bae, Jung-Woo
Lee, Yun Jeong
Lee, Seok-Yong
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2016R1A2B4007381)
Article History
Received: 12 March 2018
Accepted: 9 July 2018
First Online: 24 July 2018
Compliance with ethical standards
: All subjects provided verbal and written informed consent. This study was performed in accordance with the guidelines of the Declaration of Helsinki and was approved by the Institutional Ethics Committee of Sungkyunkwan University, Suwon, Korea.
: The authors declare that they have no conflict of interest.