Bae, Kee Jeong
Jang, Hyo Seok
Gong, Hyun Sik
Kang, Yusuhn
Kim, Jihyeung
Baek, Goo Hyun
Article History
Received: 28 October 2019
Revised: 17 January 2020
Accepted: 21 January 2020
First Online: 1 February 2020
Compliance with ethical standards
: This study was approved by the Institutional Review Board of the authors’ hospital (Seoul National University Bundang Hospital IRB No: B-1806-477-102). All investigations were conducted in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all participants.
: The authors declare that they have no conflict of interest.