1. Professor of Microbiology, Dept. of Microbiology and Center for Biofilm Engineering, Montana State Univ., P.O. Box 173520, Bozeman, MT 59717-3520.
2. Postdoctoral Fellow, Dept. of Microbiology, Montana State Univ., P.O. Box 173520, Bozeman, MT 59717-3520.