1. Department of Neurology, McGovern Medical School at The University of Texas Health Science Center at Houston (A.L.J.-C.).
2. Department of Neurology, The Ohio State University Wexner Medical Center, Columbus (A.M.Z.).
3. Department of Neurology, Kaiser Permanente, Los Angeles, CA (N.S.).
4. Department of Neurology, Cedar Sinai Medical Center, Los Angeles CA (S.S.S.).
5. Department of Neurology, University of Utah, Salt Lake City (J.J.M.).