Funding for this research was provided by:
Ministerstvo Zdravotnictví Ceské Republiky (RVO-FNOs/ 2015, RVO-FNOs/ 2015, RVO-FNOs/ 2015, RVO-FNOs/2016)
Article History
Received: 27 May 2020
Accepted: 9 November 2020
First Online: 18 November 2020
Ethics approval and consent to participate
: The study protocol follows the Declaration of Helsinki Ethical Principles for Medical Research Involving Human Subjects and it was approved by ethical committee of University Hospital Ostrava, Czech Republic. Written informed consent was obtained from all participants who took part in the study.
: Not applicable.
: The authors state that there are no conflicts of interest regarding the publication of this article.