Article History
Received: 30 January 2018
Accepted: 25 July 2018
First Online: 2 August 2018
Ethics approval and consent to participate
: This article does not contain any studies with animals performed by any of the authors. 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.
: This was a general population survey, in which participants were informed that survey data would be anonymized, evaluated, and used for statistical analysis.
: The authors declare that they have no competing interests.
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