Received: 1 February 2020
Accepted: 21 August 2020
First Online: 11 September 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of China Medical University Hospital (CMUH108-REC3–063). The study complied with the Declaration of Helsinki. All methods were performed in accordance with the relevant guidelines and regulations, and a waiver of informed consent was granted by the IRB.
: Not applicable.
: The authors declare that they have no competing interests.