**Author details**

Tina Levec and Miroljub Jakovljević\* Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia

\*Address all correspondence to: miroljub.jakovljevic@zf.uni-lj.si

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
