Choi, Young-Ah
Kim, Yale
Shin, Hyung-Ik
Funding for this research was provided by:
Korea and Workers' Compensation & Welfare Service
Article History
Received: 9 October 2018
Revised: 3 January 2019
Accepted: 14 January 2019
First Online: 30 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was conducted in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of Seoul National University Hospital (identifier number: 1604-007-752). We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research.