RT Journal Article SR Electronic T1 Economic returns to medical research funding JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e022131 DO 10.1136/bmjopen-2018-022131 VO 8 IS 9 A1 Jonathan Grant A1 Martin J Buxton YR 2018 UL http://bmjopen.bmj.com/content/8/9/e022131.abstract AB Following the publication of the final paper in a planned series of four studies estimating the economic returns from biomedical and health research, we reflect on what we have learnt from these types of assessment.