1. Institute of Animal Production, Department of Biology of Reproduction, Prague, Czech Republic and Center for Cell Therapy and Tissue Repair, Prague, Czech Republic
2. University of Teramo, Department of Structure, Function, Pathology and Biotechnology, Nepezano, Italy
3. Charles University, Faculty of Sciences, Prague, Czech Republic
4. Institute of Animal Production, Department of Biology of Reproduction, Prague, Czech Republic and Center for Cell Therapy and Tissue Repair, Prague, Czech Republic
5. The Babraham Institute, Babraham Developmental Genetics Program, Cambridge, United Kingdom
6. Iscare IVF, Prague, Czech Republic