Population Based Study of 12 Autoimmune Diseases in Sardinia, Italy: Prevalence and Comorbidity
www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0032487If the link doesn't work (which is doesn't) then just highlight the title and google it fi you're interested.
Some are dominant to women, some men, and some (IBD) is an even split. I believe this sorta holds true elsewhere in the world as well, but I'm not sure. Others would know better. It's interesting though.
They have the same study but specific to just IBD as well - Just google Incidence of IBD in Sardinia, Italy I think it is.
Post Edited (Canada Mark) : 10/20/2014 7:24:59 PM (GMT-6)