Outcome Prognostication of Acute Brain Injury using the Neurological Pupil Index (ORANGE) study: protocol for a prospective, observational, multicentre, international cohort study oleh Giuseppe Citerio, Mauro Oddo, Fabio Taccone, Francesca Elli, Alessia Vargiolu, Stefania Galimberti, Paola Rebora, R Badenes, P Bouzat, A Caricato, RM Chesnut, C Hemphill, F Rasulo, S Schwab, JI Suarez, K Sunde, Aaron Blandino, Letterio Malgeri, Eleonora Rossi, Francesca Graziano