Natural History Study in Huntington Disease Gene Expansion Carriers (HDGECs) - SHIELD HD

Columbia University, New York

ICM - Institut du Cerveau et de la Moelle épinière, Paris

Rocky Mountain Movement Disorders Center, Englewood

Inland Northwest Research, Spokane

University of California, San Diego (UCSD), San Diego

Beth Israel Deaconess, Boston

Centre for Movement Disorders, Toronto

North York General Hospital, Toronto

George-Huntington-Institut (GHI), Münster

University College London - Institute of Neurology & The National Hospital for Neurology and Neurosurgery, London