1. Institute for Genomic Biology; University of Illinois at Urbana-Champaign; Urbana Illinois
2. Department of Animal Sciences; University of Illinois at Urbana-Champaign; Urbana Illinois
3. INRA; UMR1198 Biologie du Développement et Reproduction; Jouy-en-Josas France
4. ENVA; Maisons Alfort France
5. INRA; UE1298 Unité Commune d'Expérimentation Animale de Bressonvilliers; Leudeville France
6. Department of Evolution and Ecology and The Genome Center; University of California; Davis, Davis California