Funding for this research was provided by:
Korean Society of Maternal Fetal Medicine (NA)
Text and Data Mining valid from 2019-04-03
Received: 12 September 2018
Accepted: 4 March 2019
First Online: 3 April 2019
Ethics approval and consent to participate
: This study is approved by the Institutional Review Board of Seoul National University Hospital (C-1710-063-89), Cheil General Hospital and Women’s Healthcare Center (CGH-IRB-2017-42), and Ministry of Food and Drug Safety in Korea, and is registered at ExternalRef removed (NCT03547791). After the participants are provided enough information about the purpose and methods of the research, the written informed consents will be provided as mentioned in methods.
: Not applicable.
: None of the authors have any conflict of interest.
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