Funding for this research was provided by:
Ministerstvo Zdravotnictví Ceské Republiky (FNOs/2018)
Received: 29 January 2020
Accepted: 26 March 2020
First Online: 22 April 2020
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: All procedures were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all participants included in the study.