Cuthbert, J. J., Kearsley, J. W., Kazmi, S., Kallvikbakka-Bennett, A., Weston, J., Davis, J., …Clark, A. L. (2019). The impact of heart failure and chronic obstructive pulmonary disease on mortality in patients presenting with breathlessness. Clinical Research in Cardiology, 108(2), 185–193. https://doi.org/10.1007/s00392-018-1342-z