The website's author.
I commended the author of the Anavex against Parkinson's website.
But, just what are his qualifications? Well, he's not a high school biology teacher. A bit more:
I am the Deputy Director of Research at the Cure Parkinson's Trust. Before that I was working as a Parkinson's research scientist at the University of Cambridge where I conducted both clinical- and lab-based research on Parkinson's. I have worked in the Parkinson's research field for over 15 years - both academically and in biotech ventures. In addition, I am the president of my local Parkinson's UK support branch in North Hertfordshire. All of my views/opinions expressed here are solely my own, and may not reflect the views of my employer or associated parties.
Who ya gonna believe?