Funding for this research was provided by:
Grant Agency of Charles University (1590218)
Text and Data Mining valid from 2019-04-14
Received: 8 June 2018
Accepted: 5 April 2019
First Online: 14 April 2019
Compliance with ethical standards
: 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 individual participants from the contemporary Czech population included in the study.
: This article does not contain any studies with animals performed by any of the authors.
: The authors declare that they have no conflict of interest.