Age, sex, COPD, dyspnea, dizziness, respiratory rate, heart rate, neutrophil, lymphocyte, platelet count, D-dimer, lactate dehydrogenase, albumin, EGFR, hypersensitive troponin I, N-terminal pro-brain natriuretic peptide, C-reactive protein, procalcitonin. Here, CRP is linked to chronic obstructive pulmonary disease.