1. Center for Analytical Chemistry and Christian Doppler Laboratory for Mycotoxin Metabolism, Department for Agrobiotechnology (IFA-Tulln); University of Natural Resources and Life Sciences; Vienna, Konrad-Lorenz-Str. 20 A-3430 Tulln Austria
2. Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9/163 A-1060 Vienna Austria
3. Laboratory of Pharmacology and Toxicology; University of Yaounde I; Yaounde Cameroon
4. Department of Applied Genetics and Cell Biology; University of Natural Resources and Life Sciences; Vienna, Konrad-Lorenz-Str. 24 A-3430 Tulln Austria