"The IAEA role was very minor," said Dr Mike Repacholi, the WHO coordinator of radiation and environmental health in Geneva. "The article was not approved for publication because parts of it did not reflect accurately what a WHO-convened group of inter national experts considered the best science in the area of depleted uranium," he added.
Baverstock's study, which has now been passed to the Sunday Herald, pointed out that Iraq's arid climate meant that tiny particles of DU were likely to be blown around and inhaled by civilians for years to come. It warned that, when inside the body, their radiation and toxicity could trigger the growth of malignant tumors.
The study suggested that the low-level radiation from DU could harm cells adjacent to those that are directly irradiated, a phenomenon known as "the bystander effect". This undermines the stability of the body's genetic system, and is thought by many scientists to be linked to cancers and possibly other illnesses.
In addition, the DU in Iraq, like that used in the Balkan conflict, could turn out to be contaminated with plutonium and other radioactive waste . That would make it more radioactive and hence more dangerous, Baverstock argued.
"The radiation and the chemical toxicity of DU could also act together to create a 'cocktail effect' that further increases the risk of cancer. These are all worrying possibilities that urgently require more investigation," he said.