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Kaplan-Meier curves demonstrating overall survival (top left, median survival 5 years), across the three decades (top right, median survival 1987–2000: 2.8 years, 2001–2010: 5.9 years and 2010–2020: 4.9 years) and according to age (middle left: overall, middle right: 1987–2000, bottom left: 2001–2010, bottom right: 2011–2020).
