Transition matrices model as a way to better understand and predict intra-hospital pathways of covid-19 patients oleh Arnaud Foucrier, Jules Perrio, Johann Grisel, Pascal Crépey, Etienne Gayat, Antoine Vieillard-Baron, Frédéric Batteux, Tobias Gauss, Pierre Squara, Seak-Hy Lo, Matthias Wargon, Romain Hellmann