Funding for this research was provided by:
Korean Society of Pediatric Infectious Diseases. (2017)
Text and Data Mining valid from 2020-01-06
Received: 3 September 2019
Accepted: 28 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: No institutional review board approval or ethics statement was required as the present meta-analysis followed a retrospective design.
: Not applicable.
: The authors declare no conflicts of interests.