2009
• Development of the Palliative Care Needs Assessment Tool (PC-NAT) for use by multi-disciplinary health professionals,
• Nocebo hyperalgesia: How Anxiety is turned into Pain.

2007
•Nationwide monitoring of end-of-life care via the Sentinel Network of General Practitioners in Belgium: the research protocol of the SENTI-MELC study
• The evidence base of palliative medicine: is inpatient palliative medicine evidence-based?

2006
• Methodological and structural challenges in palliative care research: How have we fared in the last decades?
• Defining the patient population: one of the problems for palliative care research

2001
• Obtaining informed consent for clinical pain research: patients' concerns and information needs

2000
•What influences participation in clinical trials in palliative care in a cancer centre?