"Prior to the mad cow disease crisis in Canada, Chopra warned the government that the current handling of feed to cows was inadequate.Following this, Chopra, Haydon, Lambert and colleague Chris Bassude complained to the Public Service Integrity Officer (PSIO) office, a federal investigative body under the jurisdiction of the Treasury Board of Canada, indicating again that they were pressured by their seniors to pass a number of veterinary drugs, including Tylosin, Revalor H, Synergistin Injectable Suspension, Baytril, rBST, Carbodex and Eugenol, without proof of human safety.