1. Institution of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Ulls väg 26, 756 51 Uppsala, Sweden.
2. Centre for Quantitative Genetics and Genomics, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark.
3. Växa, Swedish University of Agricultural Sciences, Ulls väg 26, 756 51 Uppsala, Sweden.