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[...] a team of Harvard doctors is reporting that a new outpatient laser procedure promises to eliminate the need for radiation, preserve speech, shorten treatment time and significantly improve care in other ways for many patients whose cancer is diagnosed early

The undated letter was released less than a week after Senator John McCain of Arizona, the presumptive Republican nominee, released his medical records

While the world awaits findings from new AIDS prevention trials, millions of people are becoming infected because governments are overlooking studies showing that behavior modification works, AIDS experts said at the 17th International AIDS conference here

The operation was performed mainly to determine whether the melanoma, a potentially fatal form of skin cancer, had spread from his left temple to a key lymph node in his neck; a preliminary pathology test at the time showed that it had not. In 1999, during McCain's first race for president, he gave the public an extraordinary look at his medical history - 1,500 pages of medical and psychiatric records that were amassed as part of a U.S. Navy project to gauge the health of former prisoners of war.

Dr. Kevin Fenton, who directs HIV- prevention efforts at the agency, said, 'CDC's new incidence estimates reveal that the HIV epidemic is and has been worse than previously known.' A separate historical trend analysis published as part of the study suggests that the number of new infections was probably never as low as the earlier estimate of 40,000 and that it has been roughly stable over all since the late 1990s. Dr. Philip Alcabes, an epidemiologist at Hunter College in New York, raised questions about the validity of the findings. If they are true, Alcabes said in a statement, the agency has undercounted new HIV infections by about 15,000 per year for about 15 years. 'Therefore, there are roughly 225,000 more people living with HIV in the U.S. than previously suspected,' he said. 'The previous estimate was 1 million to 1.1 million.' A number of leading health experts have criticized the agency for not releasing the information earlier. On Nov. 21, CDC officials told AIDS advocacy groups and reporters that the data would be released soon. In an editorial on June 21, The Lancet, an internationally prestigious journal published in London, severely criticized the disease centers for failing to release the information and said, 'U.S. efforts to prevent HIV have failed dismally.'

It was only four years after the discovery of the structure of the DNA molecule by James Watson and Francis Crick, and one year after scientists had established that the correct number of human chromosomes was 46, a finding that helped genetics begin to flourish

''We can say we have a culprit with the smoking gun at the scene of the crime, but that still doesn't mean he's guilty,'' Dr. [Patrick S. Moore] said in a telephone interview. ''We have a long way to go to prove that this agent is really the cause,'' he said. ''But the fact that the virus is so strongly associated with the tumor is at least a very good bet that it is playing an important role.'' ''It is not every day,'' Dr. [Anthony S. Fauci] said, ''that you have some pretty compelling molecular proof that a virus is associated, likely causally, with development of a particular cancerous process.''

Specifically, the Armed Forces Institute pathology report said that details about the lesion were 'highly suggestive of a metastasis of malignant melanoma and may represent a satellite metastasis,' with satellite meaning one melanoma had spread to create another