Hi Mati, I guess anytime you buy a book it is always best to get the latest edition but if that is the only one you can find don't let it hold you back. Unfortunately I've temporarily misplaced my copy but will look for it and when found we can compare notes. I've been researching and experiencing ICV dysfunction for quite a while now and feel I'm very well versed so I will answer any questions you have and help any way I can. My extreme sensitivity is a curse but it is also a gift because I can feel everything that causes me problems so in that way it also provides enlightenment.