1 Institute of Pathophysiology, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08 Bratislava, Slovak Republic; Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic. Electronic address: simko@fmed.uniba.sk.
2 Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX, USA.