1. Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 6 162 06 Czech Republic
2. Department of Pediatric Hematology and Oncology, 2nd Faculty of Medicine Charles University and Motol University Hospital V Uvalu 84 Prague 5 150 06 Czech Republic
3. Department of Ophthalmology, 2nd Faculty of Medicine Charles University and Motol University Hospital V Uvalu 84 Prague 5 150 06 Czech Republic
4. Department of Histology and Embryology, 2nd Faculty of Medicine Charles University V Uvalu 84 Prague 5 150 06 Czech Republic