Original Headline: Putin could have poisoned Hillary says world renowned doctor who exposed NFL concussion crisis and was played by Will Smith in Hollywood movie A world-renowned doctor has made the far-fetched suggestion Russia's President Vladimir Putin could be responsible for poisoning Hillary Clinton, who was diagnosed earlier this week with pneumonia. The 68-year-old Democratic candidate for the White House collapsed into the arms of her Secret Service agents on Sunday after being rushed from the 9/11 memorial service at the World Trade Centre. Dr Bennet Omalu, the doctor who exposed the NFL concussion crisis, tweeted: 'I must advice (sic)...