1. Crop & Soil Science Dept., Oregon State University, Corvallis, OR U.S.A.
2. Dept. of Crop & Soil Science, Washington State University, Mt. Vernon, WA U.S.A.
3. Rahr Malting Co., Shakopee, MN U.S.A.
4. University of Lleida, Lleida, Spain
5. The Sainsbury Laboratory, Norwich Research Park, Norwich, NR4 7UH U.K.
6. New Glarus Brewing Co., New Glarus, WI U.S.A.
7. Estación Experimental Aula Dei, CSIC, Zaragoza, Spain
8. Cereal Crop Research Unit, USDA-ARS, Madison, WI U.S.A.
9. The James Hutton Institute, Invergowrie, Dundee DD2 5DA, Scotland, U.K.