"Epidemiology and etiology of Parkinson’s disease: a review of the evidence"
Karin Wirdefeldt • Hans-Olov Adami • Philip Cole • Dimitrios Trichopoulos • Jack Mandel
Eur J epidemiol (2011) 26:S1-S58
http://www5.ocn.ne.jp/~ajca/cosic23.6-17.pdf
The above paper is a massive (more than 50 pages and 600 references) review of the state of play.
Highlights:
A table showing the distinctive clinical features of different gene types (e.g. those with PARK2 on average have a slow progression).
"Higher serum uric acid concentration has been linked also to slower clinical progression of PD"
John