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Figure 2 Cluster-free survival and inducible VT during baseline programmed ventricular stimulation. Patients in whom no VT could be induced and patients in whom VF or polymorphic VTs were induced were taken together in the no-monomorphic-VT group, because they did not differ significantly in cluster-free survival. Superior axis describes VTs with left-to-right superior axis, inferior axis describes VTs with left-to-right inferior axis.