Funding for this research was provided by:
Chung Shan Medical University Hospital (CSMUH-2019-001)
Article History
Received: 18 December 2019
Accepted: 31 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: This study was approved by ethics committee of China Medical University Hospital (DMR101-IRB2-194). Written consent was not obtained from the study participants as only de-identified data were obtained from the LHIRD 2010, and a waiver of patient consent was provided by the ethics committee for this study.
: Not applicable.
: The authors declare that they have no competing interests.