1. Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
2. Municipal Institute of Medical Research (IMIM-Hospital del Mar), Barcelona, Spain
3. CIBER Epidemiologia y Salud Pública (CIBERESP), Spain
4. Department of Experimental and Health Sciences, Pompeu Fabra University, Barcelona, Spain
5. Department of Maternal-Foetal Medicine, ICGON (Institut Clínic d´Obstetrícia, Ginecologia i Neonatologia), Hospital Clinic-IDIBAPS (Institut d´Investigacions Biomèdiques Agustí Pi i Sunyer), University of Barcelona, Barcelona, Spain
6. Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, California, USA