Funding for this research was provided by:
National Research Foundation of Korea (2018R1D1A3B07041280)
Received: 23 October 2019
Accepted: 17 February 2020
First Online: 22 February 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Gyeongsang National University Changwon Hospital (GNUCH 2020–02-012). The written consent was waived by the Institutional Review Board because the research was a routine part of infection control activities and presented no more than minimal risk of harm to the participants.
: Not applicable.
: The authors declare that they have no competing interests.