| apdaparkinson.org | American Parkinson Disease Association |
| parkinsonsdisease.com | Awakenings |
| parkinsonalliance.net | The Parkinson Alliance |
| cnsonline.org | The Center for Neurologic Study |
| apdama.org | APDA: The Massachusetts Chapter |
| thedifferenceofone.org | The Difference of One |
| parkinsons.org.uk | Special Parkinson's Research Interest Group |
| parkinsonsdisease-rhodeisland.org | Parkinsons Disease - Rhode Island |
| indigo.ie | PALS Support Group (Ireland) |
| edinburghparkinsons.org | Edinburgh Branch of the Parkinson's Disease Society of the UK |
United States , Georgia , Atlanta