1. Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI, USA
2. Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
3. Department of Animal Science, University of Wisconsin-Madison, Madison, WI, USA
4. Biomedical Informatics Research Center, Marshfield Clinic Research Institute, Marshfield, WI, USA
5. Center for Human Genetics, Marshfield Clinic Research Institute, Marshfield, WI, USA
6. Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
7. Department of Computer Sciences, University of Wisconsin-Madison, Madison, WI, USA