Risk of spread in adult-onset isolated focal dystonia: A prospective international cohort study

Brian D. Berman, Christopher L. Groth, Stefan H. Sillau, Sarah Pirio Richardson, Scott A. Norris, Johanna Junker, Norbert Brüggemann, Pinky Agarwal, Richard L. Barbano, Alberto J. Espay, Joaquin A. Vizcarra, Christine Klein, Tobias Baümer, Sebastian Loens, Stephen G. Reich, Marie Vidailhet, Cecilia Bonnet, Emmanuel Rose, Hyder A. Jinnah, Joel S. Perlmutter