Stevens Sarah, Valderas Jose M, Doran Tim, Perera Rafael, Kontopantelis Evangelos
Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK National Institute for Health Research School for Primary Care Research, Oxford, UK.
APEx Collaboration for Academic Primary Care, Institute for Health Services Research, University of Exeter Medical School, University of Exeter, Exeter, UK.
BMJ. 2016 Mar 10;352:i1114. doi: 10.1136/bmj.i1114.