1. Texas Tech University, Department of Environmental
Toxicology, Lubbock, Texas 79409, United States
2. Oklahoma State University, Department of Biosystems
and Agricultural Engineering, Stillwater, Oklahoma 74078-6016, United States
3. Texas Tech University, Department of Animal and
Food Sciences, Lubbock, Texas 79409, United States
4. Baylor University, Department of Environmental
Science, Waco, Texas 76706, United States