Funding for this research was provided by:
Korea Health Industry Development Institute (HI17C1934)
National Research Foundation of Korea (2016R1C1B2010739)
Ministry of Health and Welfare (HM15C0995)
Yonsei University College of Medicine (6-2015-0174)
Received: 26 March 2018
Accepted: 15 April 2019
First Online: 21 May 2019
Ethics approval and consent to participate
: This study protocol was approved by the Korean Ministry of Food and Drug Safety and complies with ethical standards based on the Declaration of Helsinki. Case report forms will be stored where only researchers can access them, and electronic documents are stored with secure, limited access. Data transmission will be encrypted and information that identifies individuals will be removed. The authors plan to disseminate the results in peer reviewed journals and related scientific conferences.
: Not applicable.
: The authors declare that they have no competing interests.
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