Single-agent gemcitabine in patients with advanced, pre-treated angiosarcoma: A multicenter, retrospective study. - Watson S; Verret B; Ropert S; Adam J; Bahleda R; Briand S; Cavalcanti A; Chamseddine AN; Court C; Fadel E; Faron M; Haddag-Miliani L; et al. (Cancer medicine, 2023)