Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu|Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. beauheim@genome.stanford.edu