Once again you make unwarranted assumptions Midlothian Girl! So poor marks for Science still. Now you bring up further small ethnic groups to make what point?
I shouldn't have to educate you since you seem to think you know it all already, esp since you quote a paper which you haven't read (but why does that not surprise me?). In China there is a lot of biliary fluke infestation - this is why the incidence of cholangiocarcinoma is much higher than Western society.
But of course you resort to the very lazy tactic of trying to say I'm not making a point. Really? except that you are wrong about hepatic stones, and even wronger about green blobs. You see I read papers I quote Midlothian Girl - try it sometime.