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Alternative Definitions of Health Care Programme Benefits for Contingent Valuation Studies
Currie, G, (1998)
When Do the "Dollars" Make Sense? Toward a Conceptual Framework for Contingent Valuation Studies in Health Care
O'Brien, B, (1996)
Willingness-to-pay: A Valid and Reliable Measure of Health State Preference?
O'Brien, B, (1993)