Jerusalem ? Doctors have admitted making a mistake when they treated then-Israeli Prime Minister Ariel Sharon with large doses of blood thinners after a mild stroke, according to a TV report broadcast Thursday. The hospital strongly denied the report.

Sharon has been comatose since suffering a massive stroke Jan. 4. Channel 2 TV quoted doctors who treated Sharon at Jerusalem’s Hadassah Hospital as saying the anticoagulants given him after a minor blood clot two weeks earlier might have caused the debilitating hemorrhagic stroke.

The TV station broadcast brief excerpts of the investigative report on Thursday, promising fuller versions today and again next week.

The hospital, however, said in a statement that the interpretation that doctors admitted a mistake was “in the imagination of the reporter.”