Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Krijgslaan 281 Building S9, Ghent, B-9000, Belgium. Michael.Vyverman@UGent.be.|Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure links 653, Ghent, B-9000, Belgium. Bernard.DeBaets@UGent.be.|Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Krijgslaan 281 Building S9, Ghent, B-9000, Belgium. Veerle.Fack@UGent.be.|Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Krijgslaan 281 Building S9, Ghent, B-9000, Belgium. Peter.Dawyndt@UGent.be.