Kim, Jee Yeon
Jung, Seung Chai
Ko, Youngmin
Kim, Dong Hyun
Choi, Ji Yoon
Kwon, Hyunwook
Jung, Joo Hee
Kim, Young Hoon
Han, Duck Jong
Shin, Sung
Article History
Received: 20 May 2019
Accepted: 3 September 2019
First Online: 9 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments. This study received approval from the institutional review board of Asan Medical Center (approval number: 2019-0310).For this type of study, formal consent is not required.