About the project team Professor Trish Greenhalgh Professor Ray Pawson Dr Joanne Greenhalgh Dr Justin Jagosh Dr Ana Manzano Dr Gill Westhorp Dr Geoff Wong Professor Trisha Greenhalgh Trish was the Principal Investigator on the RAMESES I project and Co-Investigator on the RAMESES II project. She is Professor of Primary Care Health Sciences at the University of Oxford. Trish's research interests lie at the interface between sociology and medicine. She developed the meta-narrative review method in response to the need to make sense of heterogeneous and contested data whilst undertaking a review on the diffusion of innovations. She has been involved in a number of large scale realist research projects. Professor Ray Pawson Ray was a Co-Investigator in the RAMESES I project and consultant to RAMESES II. He is Emeritus Professor of Social Research Methodology at the University of Leeds. He and Professor Nick Tilley developed the application of realist logic for the evaluation of programmes in his book, Realistic Evaluation in 1997. This same logic of enquiry has been developed for synthesising the literature on complex interventions or programmes, as set out in his seminal text, Evidence-Based Policy: A Realist Perspective in 2006. His book, The Science of Evaluation: A Realist Manifesto further details and develops the realist approaches he has developed and pioneered. Dr Joanne Greenhalgh Joanne is a Co-Investigator in the RAMESES II project and is Associate Professor in the Department of Sociology and Social Policy at the University of Leeds and an experienced researcher in realist approaches. Her interests are in applying realist evaluation and realist synthesis to the evaluation of healthcare policy and practice. Dr Justin Jagosh Justin is an Honorary Research Associate at the University of Liverpool and Director for the Centre for Advancement in Realist Evaluation and Synthesis - CARES.  He is an advisor on numerous research contracts involving realist methodology and delivers training workshops in the UK and Internationally, including an annual CARES Summer School. Dr Ana Manzano Ana is a Co-Investigator in the RAMESES II project and is Lecturer in the Department of Sociology and Social Policy at the University of Leeds and an experienced realist evaluator, specialising in the evaluation of complex applied health care interventions. Dr Gill Westhorp Gill is an evaluation expert and has used both the realist evaluation and synthesis methods on a range of projects internationally. She is Director of Community Matters, a research consultancy in Adelaide, South Australia and Professorial Research Fellow and lead for the Realist Research Evaluation and Learning Initiative (RREALI) at Charles Darwin University. She undertook her PhD in Social Research Methods with Nick Tilley as her supervisor. Gill's role in RAMESES I and II is to provide realist methodological input and advice. Dr Geoff Wong Geoff was a Co-Investigator in the RAMESES I project and Principal Investigator for RAMESES II. He is a Clinical Research Fellow at the University of Oxford and a part-time General Practice Principal in London. His doctoral thesis involved undertaking a realist synthesis on the use of the Internet in medical education and was supervised by Trish and Ray. Geoff has since helped to develop realist research appraoches and provides methodological support or training to other realist researchers.