Correlations between the GAP-derived rank for SARS severity and clinical parameters. (A) The scatter plot of all SARS specimens with the order obtained from the GAP method and the days after the onset of disease showed a significant correlation (P < 5 × 10-7). (B) Sixteen out of 17 SARS patients who submitted multiple blood specimens showed a similar trend of changes in the GAP-derived severity rank along with the recovery from the disease. Patients with 2 (n = 15) and 3 specimens (n = 2) were labeled with blue and green lines, respectively. (C) The scatter plot of all AS and RS specimens with the order obtained from the GAP method and clinical pulmonary infection score (CPIS) showed a significant correlation (P < 0.001).