Funding for this research was provided by:
Poznan University of Medical Sciences
Article History
Received: 6 January 2021
Accepted: 12 April 2021
First Online: 22 April 2021
Declarations
:
: The authors have no relevant financial or non-financial interests to disclose.
: Additional informed consent was obtained from all individual participants for whom identifying information is included in this article.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants/participants’ guardians included in the study.