Restricted mean survival time in cluster randomized trials with a small number of clusters: Improving variance estimation of the intervention effect from the pseudo-values regression. - Vilain-Abraham, Floriane Le; Desmée, Solène; Thompson, Jennifer A; Lacherade, Jean-Claude; Tavernier, Elsa; Dantan, Etienne; Caille, Agnès (Statistical Methods in Medical Research, 2026)