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Correlation of the different serological parameters at the three visits. Spearman’s rho values of pairwise comparisons between the test results are plotted for the three visits BL, FU1 and FU2. A color map for the gradient of values is given on the right, ranging from Spearman’s rho values from –1 to 1. (Spearman’s rho values and corresponding p-values are given in Supplementary Table 2).
