Cerebral Amyloid Angiopathy and Nontraumatic Subdural Hemorrhage—Reply Cerebral Amyloid Angiopathy and Risk of Isolated Nontraumatic Subdural Hemorrhage Cyprien A. Rivier, MD, MS; Hooman Kamel, MD, MS; Kevin N. Sheth, MD; Costantino Iadecola, MD; Ajay Gupta, MD; Mony J. de Leon, MAA, MEd, EdD; Elizabeth Ross, MD, PhD; Guido J. Falcone, MD, ScD, MPH; Santosh B. Murthy, MD, MPH Cerebral Amyloid Angiopathy and Nontraumatic Subdural Hemorrhage Francesco Bax, MD; Steven M.