Author S. Mohiuddin B. Reeves M. Pufulete R. Maishman M. Dayer J. Macleod T. McDonagh S. Purdy C. Rogers W. Hollingworth Year of Publication 2016 DOI 10.1136/bmjopen-2016-014010 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS