Yang, Seung Woo
Hyon, Yun Kyong
Na, Hyun Seok
Jin, Long
Lee, Jae Geun
Park, Jong Mok
Lee, Ji Yong
Shin, Ju Hyun
Lim, Jae Sung
Na, Yong Gil
Jeon, Kiwan
Ha, Taeyoung
Kim, Jinbum
Song, Ki Hak
Funding for this research was provided by:
Chungnam National University Hospital Research Fund (2018-2019)
National Institute for Mathematical Sciences (NIMS) grant funded by the Korea government 2020 (No. NIMS-B20900000)
Article History
Received: 16 March 2020
Accepted: 26 June 2020
First Online: 3 July 2020
Ethics approval and consent to participate
: All data analysis was carried out in accordance with applicable laws and regulations described in the Declaration of Helsinki and approved by Chungnam national university hospital institutional review board approval, reference number CNUH 2018–07-047. For this type of retrospective study formal consent is not required.
: Not applicable.
: The authors have declared that no competing interests exist.