Article History
Received: 27 December 2018
Revised: 11 February 2019
Accepted: 13 February 2019
First Online: 18 February 2019
Compliance with Ethical Standards
:
: There were no conflicts of interest.
: 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.