Author M. Rafiq A. Hayward C. Warren-Gash S. Denaxas A. Gonzalez-Izquierdo G. Lyratzopoulos S. Thomas Year of Publication 2019 DOI 10.1136/bmjopen-2019-029228 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS