Hello!
I found this paper submitted at the First International Symposium on Geospatial Health held in PR China in September, 2007, and find it to be DEFINITIVE.
This is the opening line: “There is no stronger link between a human malignancy and a parasitic infection than the link between cholangiocarcinoma (CCA) – hepatic cancer of the bile duct epithelia – and the infection with the liver fluke, Opisthorchis viverrini.
That pretty much says it all as far as I’m concerned. Some of the sponsors of this symposium were the World Health Organization, UNICEF, University of Copenhagen….not a bunch of nobodies!!!
So, take it for what it’s worth.