Receiver operating curves assessing the prognostic accuracy of a) N-terminal pro-brain natriuretic peptide, b) pro-atrial natriuretic peptide, c) high-sensitivity troponin T, d) soluble fms-like tyrosine kinase 1, e) growth differentiation factor 15 and f) ... Receiver operating curves assessing the prognostic accuracy of a) N-terminal pro-brain natriuretic peptide, b) pro-atrial natriuretic peptide, c) high-sensitivity troponin T, d) soluble fms-like tyrosine kinase 1, e) growth differentiation factor 15 and f) placental growth factor for prediction of 4-year mortality. Thomas Zelniker et al. ERJ Open Res 2015;1:00008-2015 ©2015 by European Respiratory Society