Funding for this research was provided by:
Gil Medical Center, Gachon University (2016-18)
Received: 30 May 2020
Accepted: 1 March 2021
First Online: 18 March 2021
: The study protocol was reviewed and approved by the Institutional Review Board of Gachon University Gil Medical Center (IRB approval number: GAIRB2017–065), Incheon, Republic of Korea. The study was registered at ExternalRef removed (no. NCT04079400). Specimens were collected after obtaining written informed consent from study subjects.
: Not applicable.
: The authors declare that they have no competing interests.