Ralph R. Frerichs is Professor in and founding chair (1988-2001) of the Department of Epidemiology at the UCLA School of Public Health. He is also author of the popular John Snow, Epidemiologic Information on Bioterrorism, Anthrax Outbreak, Contemporary History of Bioterrorism, and HIV Controversies websites.
He conducted a workshop on rapid surveys from August 15 through 19, 2005 for faculty, staff and associates of the Hanoi School of Public Health, 138 Giang vo, Hanoi, Vietnam. Rapid surveys are small, two-stage cluster surveys of about 300 persons that usually take less than a month to complete. For more information, please see http://www.ph.ucla.edu/epi/vn2005.html and www.ph.ucla.edu/epi/faculty/frerichs2.html.