1. Division of Human Nutrition, Wageningen University, Wageningen 6703 HD, The Netherlands
2. Nutrition and Gastrointestinal Health, Institute of Food Research, Norwich NR4 7UA, UK
3. UMC St Radboud, Nijmegen 6525 GA, The Netherlands
4. Gelderse Vallei Hospital, Ede 6716 RP, The Netherlands
5. Slingeland Hospital, Doetinchem 7000 AD, The Netherlands
6. Norfolk and Norwich University Hospital NHS Trust, NR4 7UY, UK
7. University of East Anglia, Norwich NR4 7TJ, UK
8. Department of Surgery, University Medical Center Utrecht, Utrecht 3508 GA, The Netherlands
9. Laboratory of Medical Microbiology and Immunology, St. Antonius Hospital, Nieuwegein 3430 EM, The Netherlands