Greenhalgh, T., Fahy, N., Shaw, S. (2018). 'The Bright Elusive Butterfly of Value in Health Technology Development; Comment on “Providing Value to New Health Technology: The Early Contribution of Entrepreneurs, Investors, and Regulatory Agencies”', International Journal of Health Policy and Management, 7(1), pp. 81-85. doi: 10.15171/ijhpm.2017.65