1. Mid-Continent Ecology Division; US Environmental Protection Agency; Duluth Minnesota
2. Equiparent Consulting; Woodbridge; Virginia USA
3. Badger Technical Services; Duluth; Minnesota USA
4. National Institute for Environmental Studies; Tsukuba; Japan
5. Institute of Environmental Ecology; IDEA Consultants; Shizuoka Japan
6. National Institute for Basic Biology; Okazaki; Japan