Sydney (AFP) - One of the world's top meat exporters Australia Tuesday ridiculed a landmark UN report linking sausages and ham to cancer, saying it was "a farce" to suggest they could be as lethal as cigarettes.The World Health Organization's International Agency for Research on Cancer (IARC) analysed 800 studies from around the world and found that processed meats such as sausages, ham, and hot dogs cause bowel cancer, and red meat "probably" does too.It placed processed meat into its Group 1 category of carcinogens.