1. Department of Health Evidence, Radboud University Medical Centre, Geert Grooteplein 21, Nijmegen 6525 EZ, The Netherlands
2. Access-To-Medicines Research Center, KU Leuven, Naamsestraat 69, Leuven, Belgium
3. Department of Health and Society, Wageningen University and Research, Hollandseweg 1, 6706 KN, Wageningen 3000, The Netherlands