Post-acute healthcare expenditure following COVID-19 hospitalization and associated social inequalities in Belgium: a matched cohort study. - Boiy E; Cavillot L; Devleesschauwer B; De Pauw R; De Smedt D; Gadeyne S; Gorasso V; Schmidt M; Vanthomme K; Verhaege N; Van den Borre L (BMC health services research, 2026)