1. Department of Neuroscience, Division of Clinical Neurology; Medical University of South Carolina; Charleston SC USA
2. Clinical Research and Evidence-Based Medicine Unit, Second Medical Department; Aristotle University of Thessaloniki; Thessaloniki Greece
3. Department of Neurology; Iowa University Hospitals; Iowa City IA USA
4. Department of Internal Medicine; University of Toronto; Toronto Canada
5. Department of Neurology; Mayo Clinic; Rochester MN USA
6. Mayo Evidence-based Practice Center (EPC); Mayo Clinic; Rochester MN USA