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Carlozzi<\/i> currently has research grants from the NIH; she is also supported by grant funding from the NIH, NIDILRR, and CHDI; she declares no conflicts of interest; <i>S.G<\/i>. <i>Schilling<\/i> has a research grant from NSF. He also is supported by grant funding from NIH. He declares no conflicts of interest; <i>J.-S. Lai<\/i> currently has research grants from the NIH; she declares no conflicts of interest; <i>J.S.<\/i><i>Paulsen<\/i> currently has research grants from the NIH; she is also supported by grant funding from NIH, NINDS, and CHDI; she declares no conflicts of interest; <i>E.A. Hahn<\/i> 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; <i>J.S.<\/i><i>Perlmutter<\/i> 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 University, Alberta innovates, Indiana Neurological Society, Parkinson Disease Foundation, Columbia University, St. Louis University, Harvard University and the University of Michigan; <i>C.A<\/i>. <i>Ross<\/i> declares no conflicts of interest; <i>N.R.<\/i><i>Downing<\/i> declares no conflicts of interest; <i>A.L.<\/i><i>Kratz<\/i> currently has research grants from the NIH and the Craig H. Neilsen Foundation; she is also supported by grant funding from the NMSS; she declares no conflicts of interest; <i>M.K.<\/i><i>McCormack<\/i> currently has grants from the NJ Department of Health; he declares no conflicts of interest. M.A. Nance declares no conflicts of interest; <i>K.A. Quaid<\/i> has research funding from NIH, NIA, NCRR, NINDS and CHDI. She also has funding from HDSA. She has no conflicts of interest to declare; <i>J.C. Stout<\/i> has received research funding in the past three years from the Australian National Health and Medical Research Council, University College London, the CHDI Foundation, Prana Biotechnology, and the University of California, Davis. She is a Director of Stout Neuropsych Pty Ltd, which has received funding from Omeros, Teva Pharmaceuticals, Vaccinex, and Isis. She has been a consultant to Prana Biotechnology and Roche. She receives compensation as a member of the Board of the Huntington\u2019s Study Group. <i>R.C. Gershon<\/i> receives research funds from numerous NIH institutes and the Department of Defense. He also receives consulting funds from AO Outcome Center, LLC (a for-profit arm of the nonprofit AO Foundation) and the American Board of Foot and Ankle Surgery; <i>R.E.<\/i><i>Ready<\/i> declares that she has no conflicts of interest; <i>J.A. Miner<\/i> is supported by research grants from the NIH; she declares no conflict of interest; <i>S.K. Barton<\/i> is supported by grant funding from the Huntington\u2019s Disease Society of America, CHDI Foundation and the NIH. She declares no conflicts of interest; <i>S.L. Perlman<\/i> is supported by grant funding from the NIH, CHDI, FARA, NAF, and several pharmaceutical companies (Edison, Horizon, Pfizer, Reata, Retrotope, Shire, Teva); she declares no conflicts of interest; <i>S.M. Rao<\/i> has received research grants from NIH, Department of Defense, National MS Society, CHDI Foundation and Biogen, and honoraria from the International Neuropsychological Society, Biogen and Genzyme; he declares no conflicts of interest; <i>S.<\/i><i>Frank<\/i> receives salary support from the Huntington Study Group for a study sponsored by Auspex Pharmaceuticals. There is no conflict of interest; <i>I.<\/i><i>Shoulson<\/i> has received research grants from the Food and Drug Administration (FDA), National Institutes of Health (NINDS, NHGRI) and the Parkinson\u2019s Disease Foundation (NY, NY). He has also received speaker honoraria from the American Academy of Neurology and <i>JAMA Neurology<\/i> as an associate editor. Since May 2014, Dr. Shoulson has been a non-executive director of Prana Biotechnology Ltd (Melbourne, Australia), for which he is compensated for director and consulting services but has no equity positions or stock options in the company. He declares no conflicts of interest as a co-author of the submitted research report. <i>H.<\/i><i>Marin<\/i> currently has grants from the NJ Department of Health; he declares no conflicts of interest. <i>M.D.<\/i><i>Geschwind<\/i> currently has research grants from the NIH\/NIA and Quest Diagnostics; he is also supported by grant funding from Cure PSP and Tau Consortium. He does consulting for MedaCorp, Inc, Gerson-Lehrman Group, Best Doctors, Advance Medical, Inc. and Optio, LLC. He receives compensation for multiple Grand Round lectures. He also gets funding for his research work from the Michael J Homer Family Fund. He discloses no conflicts of interest. <i>P.<\/i><i>Dayalu<\/i> currently has research grants from the NIH, Astra-Zeneca, and Vaccinex. He declares no conflicts of interest. <i>S.M.<\/i><i>Goodnight<\/i> is supported by grant funding from the NIH and the Craig H. Neilsen Foundation; she declares no conflicts of interest. <i>D.<\/i><i>Cella<\/i> receives grant funding from the National Institutes of Health and reports that he has no conflicts of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was obtained from all individual participants included in the study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}