Published at the same date (23 May 2013) as a check of results of a paper published last year (Alzheimer disease):
http://www.sciencedaily.com/releases/2013/05/130523143004.htm
http://www.sciencedaily.com/releases/2013/05/130523143541.htm
I think I am starting to understand why finding a cure for neurodegenerative disease is so difficult. If this is the quality of the research, we will have to wait another 500 years before we find a cure.