1. MedStar Georgetown University Hospital & Georgetown University Medical Center – Huntington Disease Care, Education & Research Center, Wisconsin Avenue NW, Washington, DC, USA
2. IMS Health, Willow Oaks Corporate Drive, Fairfax, VA, USA
3. University of Iowa – Department of Psychiatry, Hawkins Drive, Iowa City, IA, USA
4. CHDI Management/CHDI Foundation, Village Boulevard, Princeton, NJ, USA