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Chapman, A. Early economic evaluation for medical devices. (2011) British Science Festival.
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Chapman, A. 2013, The use of early economic evaluation to inform medical device development decisions: an evaluation of the headroom method. Ph.D. thesis, University of Birmingham.
Girling, A., Chapman, A., Lilford, R., Young, T. Business Decisions for New Medical Devices. The Headroom Approach. (2012). MATCH Workbooks.