Oh, Sang Hoon
Park, Kyu Nam
Choi, Seung Pill
Oh, Joo Suk
Kim, Han Joon
Youn, Chun Song
Kim, Soo Hyun
Chang, Kiyuk
Kim, Seong Hoon
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2016R1C1B1009088)
Article History
Received: 20 February 2019
Accepted: 10 June 2019
First Online: 18 June 2019
Ethics approval and consent to participate
: The study was approved by the local ethics committees in each participating hospital, and informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.