Funding for this research was provided by:
Korea Health Industry Development Institute (HB16C0023)
Text and Data Mining valid from 2020-02-13
Received: 30 August 2019
Accepted: 23 December 2019
First Online: 13 February 2020
Ethics approval and consent to participate
: This study has been approved by the IRB of PNUKH (approval number 2018014). All participants must sign the latest version of the informed consent form approved by the IRB. This trial has been registered at the Clinical Research Information Service (KCT0003632), which is one of the World Health Organization’s International Clinical Trials Registry Platforms. If protocol modifications are necessary, they will be reported to the IRB. The personal information of subjects will be kept secret and will be processed anonymously.
: Not applicable.
: The authors declare that they have no competing interests.