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Figure 3: Chromophore voiding patterns in asymptomatic children. Examples of NIRS data sets from 4 asymptomatic children ((a) 12 yrs, (b) 5 yrs, (c) 13 yrs, (d) 15 yrs). A positive trend in [O2Hb] and [tHb] is evident which begins on permission to void and continues for all or the majority of uroflow, while [HHb] remains essentially unaltered.