Author H. Booth A. Gallagher D. Mullett L. Carty S. Padmanabhan P. Myles S. Welburn M. Hoghton I. Rafi J. Valentine Year of Publication 2019 DOI 10.3399/bjgp19X704597 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS