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. 2009 Apr 21;3(4):e422. doi: 10.1371/journal.pntd.0000422

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Wichmann et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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DNA concentrations were plotted only for those patients still showing cell-free Schistosoma DNA in plasma after treatment. These data were pooled from patients who had been followed prospectively after being diagnosed with Katayama syndrome, as well as from patients examined retrospectively after concluded treatment. Linear regression analysis yielded the graph equation Y = 2.03−0.02 X. Exponential regression yielded the graph equation Y = e ^∧ −0.02 (X−30.4).