1. Department of Basic Animal and Veterinary Sciences, Faculty of Life Sciences, University of Copenhagen, Denmark.
2. Norwegian Center for Stem Cell Research, Stem Cell Epigenetics Laboratory, IBM, Faculty of Medicine, University of Oslo, Oslo, Norway.
3. Constantine the Philosopher University, Nitra, Slovakia.
4. Department of Large Animal Sciences, Faculty of Life Sciences University of Copenhagen, Denmark.
5. Institute of Farm Animal Genetics (FLI), Mariensee, Neustadt, Germany.
6. Department of Genetics and Biotechnology, Faculty of Agricultural Sciences, Aarhus University, Denmark.