1. Department of Laboratory Animal Science, Utrecht University, 3584 CM Utrecht, The Netherlands
2. Department of Nutrition, Utrecht University, 3584 CM Utrecht, The Netherlands
3. Department of Animal Physiology, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands
4. Department of Wageningen Centre for Food Sciences, Diedenweg 20, 6700 AN Wageningen, The Netherlands