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Barb: I read with interest that you had succesful injections of Collagen to improve your voice. Now, How does this work? The implication is that changes take place in the vocal cords and that those changes are related to PD. Do you know what the effect is of PD on the cords? Carline's voice has gotten weaker and I am curious. As a side note a doctor on the French forum said: "Je ne pense pas que les injections de collagene puissent ameliorer la voix lorsque seule la MP l'a deterioree .." ie. he does not think that the injections will help when they deteriorated due to PD only. So, I am confused. Well Barb .... You are our local expert .... speak. K-F cg Carline