Kim, Mi Jin
Lee, Kyung Jae
Article History
Received: 28 October 2019
Accepted: 5 March 2020
First Online: 14 March 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committees of Hallym University Sacred Heart Hospital (IRB no. 2019–11-031) and KNHANES surveys are approved by the Korean Center for Disease Control and KNHANES participants and legal representatives of children under 14 years provided written informed consent.
: Not applicable.
: The authors have conflicts of interest to disclose.