Text and Data Mining valid from 2020-02-27
Received: 25 November 2019
Accepted: 18 February 2020
First Online: 27 February 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board in each participating hospital, including Taichung Veterans General Hospital (CE16093A), National Taiwan University Hospital (201605036RIND), Taipei Veterans General Hospital (2016-05-020CC), Tri-Service General Hospital (1-105-05-086), Chang-Gung Memorial Hospital (201600988B0), China Medical University Hospital (105-REC2-053(FR)), Kaohsiung Medical University Hospital (KUMHIRB-E(I)-20170097), and Kaohsiung Chang-Gung Memorial Hospital (201600988B0). No consent was required for this type of study.
: Not applicable.
: On behalf of all authors, the corresponding author states that there is no conflict of interest.