nan poisoning diagnosis rock solid cnn doctor overseen treatment vienna ukrainian opposition leader viktor yushchenko says diagnosis dioxin poisoning rock solid says information must obtained medical authorities determine candidate prognosis dr michael zimpfer told cnn sunday based conclusion physical examination patient various blood tests carried vienna rudolfinerhaus clinic elsewhere zimpfer told reporters weekend concentration dioxin yushchenko body 1 000 times normal levels suspected third party involvement revelation prompted ukraine prosecutor general reopen probe opposition leader illness sent samples lab within europe also labs across atlantic ocean claim vast experience came results zimpfer told cnn late sunday yushchenko tremendous amount dioxin blood zimpfer said much beyond scale yushchenko accused ukrainian authorities tried poison run november fraudulent presidential election ukraine supreme court voided outcome yushchenko lost prime minister viktor yanukovich rerun contest slated held december 26 50 year old telegenic campaigner taken vienna hospital september first fell ill resumed campaigning later month pockmarked badly disfigured face given little medical information released publicly yushchenko could exposed 20 dioxins dioxin like chemicals said dr arnold schecter professor medicine university texas school public health southwestern medical center dallas