1. Animal Genomics Group, Center for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB), Cerdanyola del Vallès (Barcelona), Catalonia, Spain
2. Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
3. Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, USA
4. C.S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan, USA