Article History
Received: 26 November 2019
Accepted: 3 February 2020
First Online: 25 February 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were conducted in accordance with the Ethics Standards of the Institutional or National Research Committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethics standards. This study was approved by the Institutional Review Board (IRB) of St. Vincent’s Hospital, Catholic University of Korea (VC19RISI0266).
: Informed consent was obtained from all individual participants included in this study.