LONDON - The blood thinner may be to blame for the severity of Israeli Prime Minister Ariel Sharon's stroke, but his doctors should not be criticized for prescribing it, independent experts said Thursday. Sharon was fighting for his life in an Israeli hospital after seven hours of surgery to remove blood from the right side of his brain following a burst blood vessel, or hemorrhagic stroke. His doctors said they planned to keep him sedated for another 72 hours. Experts say his chances of recovery are slim. Experts agree that while the blood thinner, an anticoagulant called enoxaparin, did not...