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Kaplan–Meier Survival Curves: actuarial survival from the time of diagnosis of 53 patients with paroxysmal nocturnal hemoglobinuria. The monitoring of three patients from 1992, 2001, and 2005 with their respective follow-ups of 6, 3, and 14 yr has been lost and has not be included in the survival analysis. (A) The whole series. (B) Patients with thrombotic episodes (dotted line) and without it. P not significative.
