1. Department of Quantitative SciencesJanssen Research & Development, a Division of Janssen Pharmaceutica NV Beerse Belgium
2. Interuniversity Institute for Biostatistics and Statistical BioinformaticsHasselt University Diepenbeek Belgium
3. Department of Mathematics and StatisticsLancaster University Lancaster England
4. Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot Paris France