Amantadine for NeuroenhaNcement in acutE patients Study - a protocol for a prospective pilot proof of concept phase IIb study in intensive and intermediate care unit patients (ANNE... oleh Anna Hofmann, Corinna Blum, Constanze Single, Kamal Adeyemi, Patricia Schwarz, Vasileios Siokas, Tim W. Rattay, Helene A. Häberle, Reimer Riessen, Bettina Brendel, Iris Haug, Ruth Bösel, Manola Zago, Peter Martus, Ulf Ziemann, Annerose Mengel, Katharina Feil