Funding for this research was provided by:
Jihočeská Univerzita v Českých Budějovicích (GAJU 027/2019/Z.)
Article History
Received: 27 February 2019
Revised: 30 April 2019
Accepted: 1 May 2019
First Online: 29 May 2019
Compliance with ethical standards
: This paper is not based on any study carried out with human participants or animals by any of the authors.
: The authors declare that they have no conflict of interest.