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Scatter plots of BMI effects on the measurement of FFs in bilateral parotid and submandibular glands. Correlation analyses indicated that there were significant positive correlations between BMI and FF of PGs and SMGs in both sides (left PGs: r = 0.431 p < 0.001; right PGs: r = 0.433 p < 0.001; left SMGs: r = 0.586 p = 0.002; right SMGs: r = 0.531 p = 0.002).
