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Paradoxical embolism due to a patent foramen ovale (PFO) is a possible cause of ischemic stroke, particularly in young cryptogenic stroke patients. In most cases, however, it is difficult to establish a firm etiological association and the debate about management is ongoing. The Austrian Paradoxical Cerebral Embolism Trial was designed as a prospective, national, multi-center, non-randomized registry...
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