**Author details**

Stanislav Oravec1\*, Kristina Gruber2 , Andrej Dukat1 , Peter Gavornik1 , Ludovit Gaspar1 and Elisabeth Dostal3

\*Address all correspondence to: stanislavoravec@yahoo.com

1 2nd Department of Internal Medicine, Faculty of Medicine, Comenius University, Bratisla‐ va, Slovak Republic

2 Department of Internal Medicine, Landesklinikum, Thermenregion Baden, Austria

3 Krankenanstalten Dr. Dostal, Vienna, Austria
