Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu|Department of Statistics, University of Chicago, Chicago, Illinois, United States of America. eriksson@galton.uchicago.edu