Casa Futura Canada - Benefits and limitations of fluency devices, including Casa Futura, Speech Easy, and Speech Therapy. - http://www.casafuturacanada.com
FDA medical devices database - Type KTH in the product code for a list of all anti-stuttering devices cleared for marketing in the United States. - http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfPMN/pmn.cfm