1. LABERCA, Oniris, INRAE, 44307 Nantes, France
2. EURL for Halogenated POPs, c/o State Institute for Chemical and Veterinary Analysis of Food (CVUA) Freiburg, Bissierstraße 5, 79114 Freiburg, Germany
3. University of Hohenheim, Institute of Food Chemistry (170b), Garbenstraße 28, 70599 Stuttgart, Germany
4. BIOR, Lejupes iela 3, 1076 Riga, Latvia