Lai, Shih-Wei
Lin, Cheng-Li
Liao, Kuan-Fu
Article History
Received: 23 December 2017
Accepted: 29 March 2018
First Online: 9 April 2018
Compliance with ethical standards
:
: The authors disclose no conflicts of interest.
: The study was approved by the Research Ethics Committee of China Medical University and Hospital in Taiwan (CMUH-104-REC2-115).
: Patient informed consent was not required. Insurance reimbursement claims data used in the study were available for public access. Patient identification numbers had been scrambled to ensure confidentiality.