Low-Dose Aspirin (PhD thesis)

Balancing gastrointestinal and cardiovascular outcomes in low-dose aspirin users.

Dyspepsia

Population study to identify the current prevalence, provoking factors and medication use; search for the most cost-effective initial treatment strategy (DIAMOND study).

Colorectal Cancer Screening

Comparison of Immunochemical and Guaiac-based fecal occult blood tests in the Dutch screening population (50-75 yr).

Inflammatory Bowel Disease (IBD)

Safety cohort studies in patients with M. Crohn or Ulcerative Colitis; study for biomarkers predicting treatment success.

B-Vitamins

Folate, vitamin B12 and homocysteine in hospitalized cardiovascular patients; search for new measurement techniques.