Funding for this research was provided by:
Dong-A University
Article History
Received: 23 May 2020
Accepted: 6 August 2020
First Online: 18 August 2020
Compliance with Ethical Standards
:
: Approval of our research protocols by the ethics committee was in accordance with international agreements (World Medical Association Declaration of Helsinki: ethical principles for medical research involving human subjects). For this type of study formal consent is not required. The present study protocol was reviewed and approved by the Institutional Review Board of Dong-A University College of Medicine (DAUHIRB-20-051).
: The authors declare that they have no conflict of interest.