1. First Faculty of Medicine, Institute of Anatomy Charles University Prague Czech Republic
2. First Faculty of Medicine Institute of Dental Medicine, Charles University Prague Czech Republic
3. Department of Medical Biology, Amsterdam Cardiovascular Sciences University of Amsterdam Amsterdam The Netherlands
4. Laboratory of Biomathematics, Institute of Physiology Czech Academy of Sciences Prague Czech Republic
5. Amphibian Evolution Lab Free University of Brussels Brussels Belgium
6. National Museum Prague Czech Republic
7. Laboratory of Developmental Cardiology, Institute of Physiology Czech Academy of Sciences Prague Czech Republic