1. From the Departments of Neurology (M.J.A.), and Preventative Medicine (B.D.J.), Feinberg School of Medicine, Northwestern University Medical School, Chicago, Ill; Northwestern Memorial Hospital (D.L.B.), Chicago, Ill; Emergency Department (E.M.), Barnes-Jewish Hospital, St. Louis, Mo; the Department of Neurosurgery (I.U.), San-ai Hospital, Saitama, Japan; Blood Bank and Coagulation and the Pheresis Service (J.T.), Texas Children’s Hospital, Houston; and the Departments of Pathology, Pediatrics, and...