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To The Editor: We read with interest the recent publication in the Journal by Pouratian et al. (Pouratian N, Reames DL, Frysinger R, et al: Comprehensive analysis of risk factors for seizures after deep brain stimulation surgery. Clinical article. J Neurosurg 115:310–315, August 2011). The authors rightly point out their work as an attempt to identify risk factors for seizures in patients undergoing deep brain stimulation (DBS) in a systematic fashion, and performed statistical analysis in 161 cases retrospectively. They reported a 4.3% incidence of postoperative seizures, all of them