Article History
Received: 17 December 2019
Revised: 21 April 2020
Accepted: 29 April 2020
First Online: 12 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Faculty Ethics Council (approval number: 14/2013) and conducted 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 [CitationRef removed].
: Written informed consent was obtained from all individual participants included in the study.