1. Kent State University at Stark, 6000 Frank Ave NW, North Canton, Ohio 44720,
United States
2. University of Maryland, Department of Geology, College
Park, Maryland 20742, United States
3. University of Vermont, College of Medicine,
89 Beaumont Ave., Burlington, Vermont 05405,
United States
4. Ohio State University, 125 S. Oval Mall, 275 Mendenhall
Laboratory, Columbus, Ohio 43210,
United States