Talk:Progress and Prospects in Parkinson's Research/Causes/Deficiencies/Vitamin D

The only maps I have come across so far for the prevalence of PD are for the United States

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2865395/figure/F1/

And Spain.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2796665/figure/F1/

The north/south profile is remarkably similar Can anyone point me towards prevalence maps for other countries? For a UK map I would expect to see Shetland, Orkney and Sutherland exhibiting high prevalence and Cornwall and the Scillies with low prevalence.

For Chile and Argentina I would expect the direction of the gradient to reverse.

HAPE