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E. currently has research Grants from the NIH; she is also supported by Grant funding from the NIH and CHDI. She provides patient-reported outcome measurement selection and application consultation for Teva Pharmaceuticals. She declares no conflicts of interest. Hahn, E. A. currently has research Grants from the NIH; she is also supported by Grant funding from the NIH and PCORI, and by research contracts from Merck and EMMES; she declares no conflicts of interest. Frank, S. receives salary support from the Huntington Study Group for a study sponsored by Auspex Pharmaceuticals. There is no conflict of interest. Perlmutter, J. S. currently has funding from the NIH, HDSA, CHDI, and APDA. He has received honoraria from the University of Rochester, American Academy of Neurology, Movement Disorders Society, Toronto Western Hospital, St. Luke\u2019s Hospital in St Louis, Emory University, Penn State, Alberta innovates, Indiana Neurological Society, Parkinson Disease Foundation, Columbia University, St. Louis University, Harvard University and the University of Michigan; he declares no conflicts of interest. Downing, N. R. declares no conflicts of interest. McCormack, M. K. currently has Grants from the NJ Department of Health; he declares no conflicts of interest. Barton, S. K. is supported by grant funding from the Huntington Disease Society of America, CHDI Foundation and the NIH. She declares no conflicts of interest. Nance, M. A. declares no conflicts of interest. Schilling, S. G. has a research Grant from NSF. He also is supported by Grant funding from NIH. 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