Essendon calls in world experts to investigate what its players took last year Essendon chairman, David Evans has apologised for the concern created by the club's controversial supplments programme admitting that the buck stops with him. Former Bombers coach Kevin Sheedy says today's findings could be a wake-up call for all other AFL teams. Essendon has called in world experts to see if Stephen Dank injected its players with banned substances. The Bombers arms race 2012 (Essendon. Nuclear bombs. Muscles. Drugs. ESSENDON has hired a world expert on new drug development as it seeks to prove sports scientist Stephen Dank did not inject players with illegal substances. Essendon chairman David Evans yesterday suggested the club could prove players did not take substances not approved by the World Anti-Doping Agency, saying he was growing "more and more confident." Some of that information was derived from three months' consultancy work by academic pharmacist Professor Ross McKinnon and medico Andrew Garnham. But while Evans linked that research to the club's growing confidence, McKinnon said last night he did not tick off many of the substances Essendon asked him to investigate. He told the Herald Sun he was able to explain how some of the drugs were developed, but believed some of them were not approved for human use. "I was approached about three months ago with a really big list of substances and got the impression at the time Essendon didn't have a clue what might have been used or what might not have been," McKinnon said. It was almost a grab-bag of supplements and most of them are in the public domain. They approached me to provide a framework on what stage of approval they were at, and what experience of them there was in humans. I am a pharmaceutical person with knowledge of drug development and regulatory pathways. I have no idea who took what and who didn't. I never entered into those discussions. McKinnon said the data concerning anti-obesity drug AOD-9604 suggested it "would have problems with the (WADA) code." The code is quite clear. It falls on the individuals to ensure you are not in breach of it," McKinnon said. From a drugs perspective, if something hasn't been approved for human use, we shouldn't be going anywhere near it.