*Department of Neurology, Emory University School of Medicine/Grady Memorial Hospital

the †Department of Pediatrics, Children’s Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA

The authors declare no conflict of interest.

Correspondence to: David Ross Landzberg, MD, Department of Neurology, Emory University School of Medicine, Grady Memorial Hospital, 80 Jesse Hill Jr Drive SE, Atlanta, GA 30303. E-mail: [email protected].