Funding for this research was provided by:
Ministry of Education, Science and Technology (2016R1A6A1A03010528)
Article History
Received: 12 August 2019
Accepted: 21 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Seoul St. Mary’s Hospital (Republic of Korea) and followed the tenets of the Declaration of Helsinki. A written and informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.