Kitasato University, Kitasato University, Kitasato University, National Institute for Environmental Studies, Hokkaido University, Kitasato University, Hokkaido University - Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Japan Wildlife Research Center, Japan Wildlife Research Center, Japan Wildlife Research Center, Ikari Shodoku Co., Ltd., Ikari Shodoku Co., Ltd., Ikari Shodoku Co., Ltd. - Technical Research Laboratory, Toho University, Toho University, Hokkaido University - Laboratory of Toxicology, Department of Environmental Veterinary Sciences and Kitasato University