1. Duke Clinical Research Institute, Duke University, Durham, NC, USA
2. Erasmus Choice Modelling Centre, Erasmus University Rotterdam, Rotterdam, the Netherlands
3. Erasmus School of Health Policy & Management, Erasmus University Rotterdam, Rotterdam, the Netherlands
4. Erasmus School of Economics, Erasmus University Rotterdam, Rotterdam, The Netherlands
5. Erasmus MC–Erasmus University Medical Centre, Rotterdam, The Netherlands
6. Institute for Medical Technology Assessment, Erasmus University Rotterdam, Rotterdam, the Netherlands
7. EMD Serono Inc., Billerica, MA, USA