1. Radiology, NorthShore University HealthSystem, 2650 Ridge Ave., Evanston, IL 60201, USA.
2. Northwestern Medicine, 251 E. Huron St., Chicago, IL 60611, USA.
3. Siemens Medical Solutions USA Inc., 737 N. Michigan Ave., Chicago, IL 60611, USA.
4. University of Chicago Pritzker School of Medicine, 924 E. 57th St., Chicago, IL 60637, USA.
5. Neurosurgery, NorthShore University HealthSystem, 2650 Ridge Ave., Evanston, IL 60201, USA.
6. Neurology, NorthShore University HealthSystem, 2650 Ridge Ave., Evanston, IL 60201, USA.