Funding for this research was provided by:
Kyungpook National University Hospital (Biomedical Research Institute grant (2019))
Received: 21 August 2019
Accepted: 15 January 2020
First Online: 20 January 2020
Ethics approval and consent to participate
: The study was approved by the Educational and Research Committee and the Ethics Committee of Kyungpook National University Chilgok Hospital (approval number KNUMC2015-10-0033). Before sample collection, written informed consent was obtained from all the patients, and patient/subject privacy was carefully protected.
: Not applicable.
: The authors declare that there is no competing interest.