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Article History

Received: 7 January 2019

Accepted: 13 August 2019

First Online: 19 August 2019

Ethics approval and consent to participate

: The research conformed with the Good Clinical Practice guidelines and the procedures were in accordance with the Helsinki Declaration of 1975, as revised in 2000 (concerning the ethical principles for medical research involving human subjects and prohibiting the provision of a patient’s name, initials or the hospital evidence number) and with the ethical standards of the institutional committee on human experimentation (statute from the Bioethics Committee of the Medical University in Bialystok no. R-I-002/172/2018). Members of the research team gave written and verbal information about the study to potential participants. The participants were informed about the project and gave written consent to participate.

: Not applicable.

: The authors declare that they have no competing interests.