Looking for an ADHD expert in Brussels | ADHD Information

I've suffered ADHD all my life, and even into adulthood (23yrs) it has not faded. In fact, things have gotten worse. I did very well in school because I had parents and teachers to keep me focused, but I screwed up college, nearly flunking my degree. I've taken Ritalin but it doesn't seem to work as well as it did when I was a kid (but then again I'm also depressed; that probably complicates the problem).

I'm living in Brussels and I'm looking for a neurologist or psychologist that specialises in ADHD treatment and has lots of experience working with adult ADHD. I'm looking for a mainstream doctor, not some fringe quack as my parents occasionally sent me too. I don't have a car, so I prefer someone who works in the city itself (but I am prepared to go farther out if the doctor is really worth it).

Can anybody recommend me one?