National Spasmodic Dysphonia Association (NSDA)
https://dysphonia.org/
Dystonia Medical Research Foundation (DMRF)
https://dystonia-foundation.org/
https://www.asha.org/PRPSpecificTopic.aspx?folderid=8589942600§ion=Treatment
https://www.britishvoiceassociation.org.uk/
https://australiandysphonianetwork.org/