1. Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
2. Animal Biosciences & Biotechnology Laboratory, ANRI, ARS, USDA, Bldg 230, Room 104, BARC-East, 10300 Baltimore Ave, Beltsville, MD 20705-2350, USA
3. Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.