Hi Sushi,
Dr Wallace and some other sources say around 10% of patients will get CNSV and usually within the first five years. This seems a little high really considering the very few we get here with it, I think only around 3 or 4 of us in all the years I've been here and all the members we have. I read another study from Duke University where they said 1% ............ the truth is probably somewhere between the two.
love
Lily