**Author details**

Jan Škrha1 \*, Přemysl Frič<sup>2</sup> , Petr Bušek3 , Pavel Škrha4 and Aleksi Šedo<sup>3</sup>

\*Address all correspondence to: jan.skrha@lf1.cuni.cz

1 Third Department of Internal Medicine, 1st Faculty of Medicine, Charles University, Prague, Czech Republic

2 Department of Medicine/Gastroenterology, Military University Hospital, 1st Faculty of Medicine, Charles University, Prague, Czech Republic

3 Institute of Biochemistry and Experimental Oncology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic

4 Second Department of Medicine, University Hospital, 3rd Faculty of Medicine, Charles University, Prague, Czech Republic
