Columbia University Medical Center
NYP Psychiatry Among the Top Ranked in the Nation
U.S. News & World Report Best Hospitals
Ranked #1 in Research Funding
National Institutes of Health
NewYork-Presbyterian Hospital The University Hospital of Columbia and Cornell

Dr. Alex Carballo-Dieguez in NYTimes

Rise in Unprotected Sex by Gay Men Spurs HIV Fears
December 2, 2013

Federal health officials are reporting a sharp increase in unprotected sex among gay American men, a development that makes it harder to fight the AIDS epidemic.

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