1. Marine Institute, Renville, Oranmore,
County Galway, Ireland
2. National Research Council, Institute for Marine Biosciences, 1411 Oxford Street,
Halifax, Nova Scotia, Canada
3. IFREMER, Research Unit Environment Microbiology
and Phycotoxins, Rue de
l'Ile d'Yeu, 44311 Nantes, France
4. Norwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, Norway