Article History
Received: 29 January 2018
Accepted: 20 April 2018
First Online: 18 May 2018
Compliance with ethical standards
:
: Author Semra Aktürk declares that she has no conflict of interest. Author Raikan Büyükavcı declares that she has no conflict of interest. Author Ümmühan Aktürk declares that she has no conflict 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.