Etiologies and characteristics of refractory status epilepticus cases in different areas of the world: Results from a global audit od Ferlisi, M, Hocker, S, Trinka, E, Shorvon, S, Singh, G, Kalviainen, R, Kramer, U, Godoy, D, Newton, C, O'Brien, T, Cook, M, Rossetti, A, Groppa, S, Kumlien, E, Ercegovac, M, Yasiry, Z, Guecht, A, Wu, T, Nabbout, R, Tripathi, M, Santamarina, E, Samarasekera, S, Bjellvi, J, Giovannini, G, Kurkowska-Jastrzebska, I, Baheti, N, Liviero, M, Mihaylova, T, Unnwongse, K, Impellizzeri, M, Kravljanac, R, Leitinger, M, Reinikainen, M