Ukrainian presidential candidate Viktor Yushchenko was poisoned with dioxin that could have been put in his food, but he should be able to work normally and his dramatic facial disfigurement should heal, doctors said. Yushchenko was in satisfactory condition and was expected to be released from Vienna's private Rudolfinerhaus clinic Sunday or Monday to return to campaigning in Ukraine, said hospital director Dr. Michael Zimpfer. The opposition leader was planning to give a news conference Sunday afternoon to announce when he would be discharged, a hospital spokeswoman said on condition of anonymity. Yushchenko, who faces Viktor Yanukovych in a rerun of Ukraine's disputed presidential runoff on Dec. 26, has claimed he was poisoned by Ukrainian authorities. They have denied it, according to a report of the Associated Press.