Funding for this research was provided by:
National Research Foundation of Korea (NRF-2018M3A9H3021707, NRF-2019R1A2C2005144)
Text and Data Mining valid from 2019-08-28
Received: 25 September 2018
Accepted: 16 August 2019
First Online: 28 August 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the Seoul National University Hospital, and written informed consent was obtained from all patients for the usage of samples. Parental consent was obtained when study subjects were infants or children of early childhood age. We excluded all identifying information of the participants in this article.
: Not applicable.
: The authors declare that they have no competing interests.