1. Institute of Experimental Endocrinology; Biomedical Research Center; Slovak Academy of Sciences; Bratislava Slovakia
2. Department of Biochemistry and Molecular Biology; New York Medical College; Valhalla NY USA
3. Department of Molecular Genetics; The Ohio State University; Columbus OH USA
4. Institute of Physiology; Faculty of Medicine; Comenius University in Bratislava; Bratislava Slovakia