Clinimetric testing of the comprehensive cervical dystonia rating scale

Cynthia L. Comella, Joel S. Perlmutter, Hyder A. Jinnah, Tracy A. Waliczek, Ami R. Rosen, Wendy R. Galpern, Charles A. Adler, Richard L. Barbano, Stewart A. Factor, Christopher G. Goetz, Joseph Jankovic, Stephen G. Reich, Ramon L. Rodriguez, William L. Severt, Mateusz Zurowski, Susan H. Fox, Glenn T. Stebbins