Hold that pose: capturing cervical dystonia's head deviation severity from video oleh Zheng Zhang, Elizabeth Cisneros, Ha Yeon Lee, Jeanne P. Vu, Qiyu Chen, Casey N. Benadof, Jacob Whitehill, Ryin Rouzbehani, Dominique T. Sy, Jeannie S. Huang, Terrence J. Sejnowski, Joseph Jankovic, Stewart Factor, Christopher G. Goetz, Richard L. Barbano, Joel S. Perlmutter, Hyder A. Jinnah, Brian D. Berman, Sarah Pirio Richardson, Glenn T. Stebbins, Cynthia L. Comella, David A. Peterson