1. Department of Neurology, Beaumont Hospital-Royal Oak, Beaumont Health, Royal Oak, MI, USA
2. Department of Neurology, St. Olav’s Hospital, Trondheim, Norway
3. Department of Neurology, Henry Ford Hospital, Detroit, MI, USA
4. Department of Neurology, Wayne State University School of Medicine, Detroit, MI, USA
5. Department of Biostatistics, Beaumont Hospital-Royal Oak, Beaumont Health, Royal Oak, MI, USA