Affiliation: | 1. Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1;2. The Methodology Center, Pennsylvania State University, University Park, PA 16802, U.S.A.;3. Department of Statistics and The Methodology Center, Pennsylvania State University, University Park, PA 16802‐2111, U.S.A. |