1. World Health Organization, Regional Office for Europe, European Centre for Environment and Health, Platz der Vereinten Nationen, 1, 53113 Bonn, Germany
2. Unit of Environmental Epidemiology, Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
3. Escuela Andaluza de Salud Publica, Cuesta del Observatorio 4, 18080 Granada, Spain