Additive prognostic impact of the cerebrospinal fluid arginine/ornithine ratio to established clinical scores in aneurysmal subarachnoid hemorrhage. - Weller J; Lampmann T; Asoglu H; Schneider M; Ehrentraut SF; Lehmann F; Güresir E; Dorn F; Petzold GC; Vatter H; Zimmermann J (Frontiers in neurology, 2023)