**Acknowledgements**

The author would like to thank Marcin Tomsia, MSc, PhD, for his review of the manuscript; Joanna Nowicka, MSc, PhD; and Ewa Czech, MSc, PhD, for their valuable comments during the preparation of previous articles and presentations and Czesław Chowaniec, MD, PhD, and Christian Jabłoński, MD, PhD, for creating optimal conditions for scientific work.
