Czerw, Agnieszka
Article History
First Online: 13 May 2017
Compliance with Ethical Standards
:
: Author 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. Participation in the survey was on the voluntary basis and anonymous.