1. PROMEC Unit, Medical Research Council, P.O. Box 19070, Tygerberg 7505, South Africa
2. Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna, Center for Analytical Chemistry, Konrad Lorenz Str. 20, 3430 Tulln, Austria
3. National Centre for Food, Spanish Food Safety and Nutrition Agency, Ctra. Pozuelo a Majadahonda km 5.100, 28220 Majadahonda (Madrid), Spain
4. The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
5. RIKILT Institute of Food Safety, Wageningen University and Research Centre, Cluster Natural Toxins and Pesticides, P.O. Box 230, 6700 AE Wageningen, the Netherlands
6. Trilogy Analytical Laboratory, 870 Vossbrink Drive, Washington, MO 63090, USA
7. USDA, ARS National Center for Agricultural Utilization Research, 1815 N. University St., Peoria, IL 61604, USA
8. Instituto Adolfo Lutz, Av. Dr Arnaldo 355, 01246-902, São Paulo/SP, Brazil
9. Institute of Sciences of Food Production, National Research Council, Via Amendola 122/o, 700126 Bari, Italy
10. Biological and Agricultural Engineering Department, N.C. State University, P.O. Box 7625, Raleigh, NC 27695-7625 USA