Funding for this research was provided by:
Vedecká Grantová Agentúra MŠVVaŠ SR a SAV (1/0653/19, 1/0792/16)
Text and Data Mining valid from 2019-08-19
Received: 11 December 2018
Accepted: 7 August 2019
First Online: 19 August 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable<i>.</i>
: The author Martin Kello as associate editor for BMC Complementary and Alternative Medicine declare that he has competing interests and ask not to be involved in the editorial process.