Received: 12 December 2018
Accepted: 5 August 2019
First Online: 16 August 2019
Ethics approval and consent to participate
: This current study was approved by the Institutional Review Board of Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, and New Taipei City, Taiwan (IRB 07-X-039). The consent to participate is not applicable because the study design is a retrospective data collection. The Institutional Review Board of Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation was responsible for administrative permissions to access the raw data.
: Not applicable.
: The authors declare no competing interests with any organization having direct or indirect financial interest in the subject matter discussed in the manuscript.