Video-EEG results and clinical characteristics in patients with psychogenic nonepileptic spells: The effect of a coexistent epilepsy. - Chen-Block, Stephanie; Abou-Khalil, Bassel W.; Arain, Amir; Haas, Kevin F.; Lagrange, Andre H.; Gallagher, Martin J.; Azar, Nabil J.; Singh, Pradumna; Sonmezturk, Hasan H. (Epilepsy & Behavior, 2016)