**Author details**

Sonja Perkov1 , Mirjana Mariana Kardum Paro1 , Vinko Vidjak2 and Zlata Flegar-Meštrić<sup>1</sup>

1 Institute of Clinical Chemistry and Laboratory Medicine, Merkur University Hospital, Za‐ greb, Croatia

2 Clinical Department for Diagnostic and Clinical Radiology, Merkur University Hospital, Zagreb, Croatia
