Reynolds, Peggy; Layefsky, Michael E.*; Saunders, L. Duncan; Lemp, George F.; Payne, Susan F.
Environmental Epidemiology Section, California State Department of Health Services and *California Public Health Foundation, Emeryville, California; †Faculty of Medicine, Department of Health Services Administration and Community Medicine, University of Alberta, Edmonton, Alberta, Canada; and ‡San Francisco Department of Public Health, AIDS Office, San Francisco, California
