Shin, Eunhae
Lim, Dong Hui
Han, Jisang
Nam, Do-Hyun
Park, Keunchil
Ahn, Myung-Ju
Kang, Won Ki
Lee, Jeeyun
Ahn, Jin Seok
Lee, Se-Hoon
Sun, Jong-Mu
Jung, Hyun Ae
Chung, Tae-Young
Funding for this research was provided by:
Ministry of Health & Welfare, Republic of Korea (HI19C0577)
Article History
Received: 30 May 2019
Accepted: 23 December 2019
First Online: 9 January 2020
Ethics approval and consent to participate
: This study was approved by the institutional review board (IRB) of Samsung Medical Center (IRB no. 2019–04-027) and was conducted according to the principles expressed in the Declaration of Helsinki.
: Not applicable due to the nature of this study and because images are entirely unidentifiable.
: The authors declare that they have no competing interests.