1. International Agency for Research on Cancer (IARC) Nutrition and Metabolism Section Biomarkers Group Lyon France
2. Department of Internal Medicine Hospital Clínic Institut d'Investigacions Biomédiques August Pi i Sunyer (IDIBAPS) University of Barcelona Barcelona Spain
3. CIBER CB06/03 Fisiopatología de la Obesidad y la Nutrición (CIBERObn) Girona Spain
4. Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona Spain