1. Department of Nutrition and Dietetics, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands
2. Department of Pulmonary Diseases, VU University Medical Center, Amsterdam, The Netherlands
3. Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
4. Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands
5. Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands
6. Department of Surgery, VU University Medical Center, Amsterdam, The Netherlands