1. Small Area Health Statistics Unit, MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, Imperial College London, United Kingdom
2. Institute of Health and Society, Newcastle University, Newcastle Upon Tyne, United Kingdom
3. CIBER Epidemiología y Salud Pública, Centre for Public Health Research, Valencia, Spain
4. Bureau of Epidemiology, Utah Department of Health, Salt Lake City, Utah, USA