1. Marine Institute, Rinville, Oranmore, Co. Galway H91 R673, Ireland
2. Measurement Science and Standards, National Research Council Canada, Halifax, NS B3H 3Z1, Canada
3. Department of Emergency Medicine, Detroit Receiving Hospital, Wayne State University, Detroit, Michigan 48202, United States
4. Department of Chemistry, University of Oslo, N-0315 Oslo, Norway
5. Ifremer, Laboratoire Phycotoxines, Rue de l’Ile d’Yeu, 44311 Nantes, France
6. Norwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, Norway