Association of copeptin, a surrogate marker of arginine vasopressin, with cerebral vasospasm and delayed ischemic neurologic deficit after aneurysmal subarachnoid hemorrhage. - Fernandez SJ; Barakat I; Ziogas J; Frugier T; Stylli SS; Laidlaw JD; Kaye AH; Adamides AA (Journal of neurosurgery, 2018)