Weisman referred two of these cases in 1981 to Michael S. Gottlieb, an immunologist at the UCLA Medical Center, who had a patient of his own with a similar pattern of symptoms. A report theyy jointly wrote published by the Centers for Disease Control in the June 5, 1981, issue of its "Morbidity and Mortality Weekly Report", describing how their patients, "5 young men, all active homosexuals, were treated for biopsy-confirmed Pneumocystis carinii pneumonia at 3 different hospitals in Los Angeles, California" of which "[t]wo of the patients died" by the time of the original report. This notice has been recognized as the first published report marking "the official start" of the AIDS pandemic and as "the first report on AIDS in the medical literature".