On arrival in Italy, he moved into a villa on the Spanish Steps in Rome, today the Keats–Shelley Memorial House museum. Despite care from Severn and Dr. James Clark, his health rapidly deteriorated. The medical attention Keats received may have hastened his death. In November 1820, Clark declared that the source of his illness was "mental exertion" and that the source was largely situated in his stomach. Clark eventually diagnosed consumption (tuberculosis) and placed Keats on a starvation diet of an anchovy and a piece of bread a day intended to reduce the blood flow to his stomach. He also bled the poet: a standard treatment of the day, but also likely a significant contributor to Keats's weakness. Severn's biographer Sue Brown writes: "They could have used opium in small doses, and Keats had asked Severn to buy a bottle of opium when they were setting off on their voyage. What Severn didn't realise was that Keats saw it as a possible resource if he wanted to commit suicide. He tried to get the bottle from Severn on the voyage but Severn wouldn't let him have it. Then in Rome he tried again... Severn was in such a quandary he didn't know what to do, so in the end he went to the doctor, who took it away. As a result Keats went through dreadful agonies with nothing to ease the pain at all." Keats was angry with both Severn and Clark when they would not give him laudanum (opium). He repeatedly demanded, "How long is this posthumous existence of mine to go on?"