http://www.docguide.com/news/content.nsf/news/8D6900B866824AC5852569D2004A496F?OpenDocument&id=223531E8BE5C847A852568DE00831550&c=Parkinson%27s&count=10 Sorry this is such a long link. You may be able to access through www.docguide.com but all I can get is the personal edition no, I'm not an MD, but there is a lot of interesting stuff for we laymen. Be well, Sylvia