1. European Union Reference Laboratory for Pesticide Residues in Fruits and Vegetables (EURL-FV) (DG SANCO), Pesticide Residues Research Group at the Universidad de Almeria and the Laboratorio Agroalimentario de la Generalitat Valenciana, 04120 Almeria, Spain
2. Pesticide Residues Research Group, Universidad de Almeria, 04120 Almeria, Spain
3. National Food Administration, Box 622, 75126 Uppsala, Sweden
4. AGES − Competence Center for Residues of Plant Protection Products, 6020 Innsbruck, Austria
5. Statistics and Applied Mathematics Department, Universidad de Almeria, 04120 Almeria, Spain