Funding for this research was provided by:
Uniwersytet Medyczny im. Piastów Slaskich we Wroclawiu (STM.A130.17.034, ST.A130.16.031)
Article History
Received: 15 May 2018
Accepted: 12 November 2018
First Online: 17 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.