The reimbursement for expensive medicines: stakeholder perspectives on the SMA medicine nusinersen and the Dutch Coverage Lock policy. - Scheijmans, Féline E. V.; Zomers, Margot L.; Fadaei, Sina; Onrust, Marthe R.; van der Graaf, Rieke; Delden, Johannes J. M. van; van der Pol, W. Ludo; van Thiel, Ghislaine J. M. W. (BMC Health Services Research, 2022)