Funding for this research was provided by:
Soonchunhyang University
Article History
Received: 25 April 2018
Revised: 12 August 2018
Accepted: 9 September 2018
First Online: 25 September 2018
Compliance with ethical standards
: This research complied with the Helsinki Declaration. Informed consent was obtained from all enrolled participants. The same informed consent form (ICF) and study protocol were provided to the independent institutional review boards/ethics committees (IRB/EC) at each medical center, and each IRB/EC reviewed the appropriateness of the protocol, risks, and benefits to the study participants. Ultimately, the IRB/EC independently approved this study without revision of the ICF or study protocol.
: None.