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Article History

Received: 17 June 2020

Accepted: 2 November 2020

First Online: 11 November 2020

Ethics approval and consent to participate

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee (KMUHIRB-E(I)-20180313, Institutional Review Board of Kaohsiung Medical University Hospital, Kaohsiung Medical University, Republic of China) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent was not required and approved by institutional research committee.

: Not applicable.

: The authors declare that they have no conflict of interest. No external funding was received for this study.