As a researcher, he has more than 15 years of experience in health economic evaluation including cost-effectiveness analyses, decision-analytic modelling, valuation of health care (e.g. discrete-choice experiments, best-worst scaling) and medication adherence.

He has been co-promotor of about 25 PhD students and is senior lecturer in HTA and health economic courses. He is currently author of about 275 peer-reviewed articles (with about 50 as first-author) including publications in PharmacoEconomics, Value in Health, Lancet of Infectious Disease, European Journal of Public Health, Health Policy, Annals of the Rheumatic Diseases, Cochrane Database of Systematic Reviews, etc.