Article History
Received: 14 August 2019
Revised: 25 December 2019
Accepted: 7 January 2020
First Online: 15 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study received approval from the Chang Gung Memorial Hospital Institutional Review Board (IRB ID: 101-4853B). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study. During the data collection process, the participants were guaranteed total privacy. The confidentiality of the collected data was strictly adhered to. Each participant was informed of the right to withdraw from the study at any time during the data collection.