Memberships
- National representative for the Netherlands of EGPRN 2005-2010 (www.egprn.org)
- Research strategy committee EGPRN (www.egprn.org)
- Dutch Organisation for Health Care Research (www.zonmw.nl), committee mental health prevention programme
- WONCA working party on mental health
- WONCA Special Interest Group for care of the Elderly
- The Netherlands committee revised national guidelines for depression and anxiety
- Dutch College of General Practitioners guideline committee for anxiety
- Dutch College of General Practitioners guideline committee for depression
- Board of the Netherlands Study of Depression and Anxiety (NESDA)
- Board of the Nederlandse Studie naar Depressie bij ouderen (NESDO)
- Scientific board of Prezens, innovative mental health care in Amsterdam
- Editor Depression Research and Treatment
- Associate editor BMC Family Practice
- Associate editor Gerofam, Turkish family practice journal
- Chairman of board of organisation health care for illegal immigrants in Leiden
- Dutch college of general practitioners
- EMGO+ Science committee (2007-2010)
- Dutch Association for Epidemiology (www.epidemiologie.nl/)