1. U.S. EPA, ORD,
NHEERL, Mid-Continent Ecology Division, Duluth, Minnesota 55804, United States
2. DuPont Haskell Global Centers for Health & Environmental Sciences, Newark, Delaware 19711, United States
3. Centre
for Fish and Wildlife Health, University of Bern, 3012 Bern, Switzerland
4. Fraunhofer
Institute for Molecular Biology and Applied Ecology, 57392 Schmallenberg, Germany