1 Blue Sky Neurology (a division of Carepoint Health), Greenwood Village, CO 80111, USA; 499 East Hampden Avenue, Suite 360, Englewood, CO 80113, USA. Electronic address: russellbartt@gmail.com.
2 Mayo Clinic College of Medicine, Department of Neurology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA. Electronic address: aksamit@mayo.edu.