1. US EPA ORD/NHEERL/Mid-Continent Ecology Division; 6201 Congdon Blvd Duluth MN 55804 USA
2. Institute of Environmental Ecology; IDEA Consultants Inc.; 1334-5 Riemon, Yaizu Shizuoka 421-0212 Japan
3. Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences; 5-1 Higashiyama, Myodaiji Okazaki Aichi 444-8787 Japan