Timothy Ray Brown, 54, better known as the Berlin patient, has died. He was the first person cured of HIV after he was given a bone marrow transplant from someone who had a natural resistance to HIV. Brown died of cancer. He was being treated for leukemia, a cancer of the blood, when he received the bone marrow transplant in 2007. When he received the bone marrow transplant, Brown stopped taking his HIV medication. Within three months, no HIV could be found in his body. For the rest of his...