Anthony C. Gatrell is Dean of the School of Health and Medicine and Professor of the Geography of Health at Lancaster University. His publications include Distance and Space: A Geographical Perspective (1983), Interactive Spatial Data Analysis (with Trevor Bailey) (1995), GIS and Health (edited with Markku Löytönen) (1998), and Geographies of Health (Blackwell, 2001).

Susan J. Elliott is Professor of Geography at McMaster University. She has published extensively in the area of effects on individual and community health of environmental exposures and was recently appointed to the United Nations University International Network on Water, Environment and Health.