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. 2016 Sep 27;7(10):4313–4326. doi: 10.1364/BOE.7.004313

Fig. 8.

Fig. 8

Bar plot of the average absolute correlation coeffcients between reference SBP and IR_PTT, reference SBP and D2_PTT, and reference SBP and D3_PTT on diseased subjects, healthy subjects and all subjects. ‘*’ represents the significance in difference is p<0.05 and ‘**’ represents the significance in difference is p<0.01.