Affiliation: | 1. Department of Biostatistics, University of Copenhagen ?ster Farimagsgade 5B, 1014 Copenhagen K, Denmark;2. Department of Applied Mathematics and Computer Sciences, Ghent University, Krijgslaan 281 S9, 9000 Ghent, Belgium;3. Departments of Epidemiology and Biostatistics, Harvard School of Public Health, 677 Huntington Avenue, Massachusetts 02115 Boston, U.S.A.;4. Department of Statistics, Hebrew University Mount Scopus, Jerusalem 91905, Israel |