Chen, Yen-Fu
Cheng, Yi-Ching
Chou, Chien-Hong
Chen, Chung-Yu http://orcid.org/0000-0001-9002-7255
Yu, Chong-Jen
Article History
Received: 11 March 2019
Accepted: 19 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: The Research Ethics Committee of National Taiwan University Hospital approved the study protocol and waived informed consent given the retrospective nature of the study and the lack of patient safety concerns.
: Not applicable
: The authors declare that they have no competing interests.