Jeroen Swart (born in 1966) lives in the Netherlands and is optician by profession. He contracted adductor spasmodic dysphonia in 2006 and immediately decided to get rid of it. After searching all over the world to find a solution he managed to overcome this disorder by almost 100% late 2010 after he had given up his search. He then decided to share his knowledge by back tracking everything that had led to his recovery and researching the explanation for all of this. These learned lessons are put in his book: Free Your Voice- the Spasmodic Dysphonia Recovery System.