From the aEpidemic Intelligence Service, Division of Applied Public Health Training, Epidemiology Program Office, bDivision of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, and cDivision of STD Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA; dSTD Program, Los Angeles County Department of Health Services, Los Angeles, CA, USA; eSTD Prevention and Control Services, City and County of San Francisco, San Francisco, CA, USA, and fDepartment of Medicine, University of California in San Francisco, San Francisco, CA, USA.
Correspondence to Jeffrey Klausner, MD, MPH, San Francisco Department of Public Health, 1360 Mission Street, Suite 401, San Francisco, CA 94103, USA.
Tel: +1 415 355 2000; e-mail: [email protected]
Received: 12 May 2004; revised: 20 July 2004; accepted: 28 July 2004.