Funding for this research was provided by:
Hanmi Group (0620140890 (2013-2607))
Received: 13 August 2019
Accepted: 6 March 2020
First Online: 19 March 2020
Ethics approval and consent to participate
: This study protocol was approved by Institutional Review Board of Seoul National University Hospital (IRB No. E-1703-020-836). Participants were informed of the purpose of research and provided written form of informed consent, when they participated in NSPTA. The written consent declared that the participants understand their information gathered through NSPTA would be used for research purpose.Administrative permission to access the NHID was acquired by National Health Insurance Sharing Service (NHIS-2017-2-336).
: Not applicable
: The authors declare that they have no competing interests.