Funding for this research was provided by:
Korea Centers for Disease Control and Prevention (2018-ER6304-01, 2018-ER6304-00)
Received: 12 May 2019
Accepted: 23 July 2019
First Online: 15 September 2019
Ethics approval and consent to participate
: This study was approved by the institutional ethics committee of each participating institution and complied with the Declaration of Helsinki (6th revision). The study is registered at ClinicalTrials.gov Identifier: (NCT03933579).
: Written informed consent was obtained from the patient for publication of their individual details and accompanying images in this manuscript. The consent form is held by the authors’ institution and is available for review by the Editor-in-Chief.
: The authors declare that they have no competing interests.