[1] Bioforsk, Norwegian Inst Agr & Environm Res, Plant Hlth & Plant Protect Div, NO-1430 As, Norway
[2] Norwegian Food Safety Author, Sect Plant Hlth & Foods Plant Origin, N-1431 As, Norway
[3] Natl Food Agcy, SE-75126 Uppsala, Sweden
[4] Finnish Customs Lab, Espoo 02151, Finland
[5] Tech Univ Denmark, Natl Food Inst, DK-2860 Soborg, Denmark