Department of Hypertension and Nephrology (retired), Mayo Clinic, Jacksonville, FL, United States. Department of Interventional Cardiology, White Oak Medical Center, Silver Springs, MD, United States. Department of Vascular Surgery, Ochsner Health System, New Orleans, LA, United States. Department of Neurology, Medical University of South Carolina, Charleston, SC, United States. Department of Neurology, Mayo Clinic Florida, 4500 San Pablo Road, Jacksonville, FL 32224, United States. Department of Neurology, Mayo Clinic Florida, 4500 San Pablo Road, Jacksonville, FL 32224, United States. Electronic address: meschia.james@mayo.edu.