Na, Hee Kyong
Lee, Jeong Hoon
Park, Se Jeong
Park, Hee Jung
Kim, Sun Ok
Ahn, Ji Yong
Kim, Do Hoon
Jung, Kee Wook
Choi, Kee Don
Song, Ho June
Lee, Gin Hyug
Jung, Hwoon-Yong
Article History
Received: 4 March 2020
Accepted: 15 April 2020
First Online: 21 April 2020
Ethics approval and consent to participate
: Written consent was obtained from each patient in advance. The study was conducted according to the guidelines of the Declaration of Helsinki and was approved by the Institutional Review of Board of Asan Medical Center (IRB number: 2014-2-10).
: Not applicable.
: The authors declare that they have no competing interests.