JDR -- Dietrich and Hoffmann 83 (11): 859 Figure 1

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Figure. Smoothed quantile plot of log-transformed CSI for former smokers (solid line) and different categories of current smokers [0–10 cig/day (long dashes), 11–20 cig/day (medium dashes), 21–30 cig/day (short dashes), and > 30 cig/day (dots)].