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doi.org/10.1016/S0140-6736(09)60649-8, hdl.handle.net/1765/16581
The Lancet
Erasmus MC: University Medical Center Rotterdam

Niëns, L., & Brouwer, W. (2009). Better measures of affordability required. The Lancet, 373(9669). doi:10.1016/S0140-6736(09)60649-8