Text and Data Mining valid from 2019-11-26
Received: 11 August 2019
Accepted: 12 November 2019
First Online: 26 November 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Medical University of Lublin (KE-0254/70/2010).All of participants have written consent to participate and publish the data. 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. Informed consent was obtained from all individuals included in the study and their parents or guardians on behalf of any participant under the age of 16.
: Not applicable.
: The authors declare that they have no competing interests.