1. Institute of Pathophysiology Faculty of Medicine Comenius University Bratislava 81108 Slovak Republic
2. 3rd Department of Internal Medicine Faculty of Medicine Comenius University Bratislava 83305 Slovak Republic
3. Institute of Experimental Endocrinology Biomedical Research Center Slovak Academy of Sciences Bratislava 84505 Slovak Republic
4. Department of Physiology School of Medicine Charles University Hradec Kralove 50003 Czech Republic