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. Author manuscript; available in PMC: 2016 Mar 7.
Published in final edited form as: Eur Respir J. 2015 Apr 2;46(1):80–87. doi: 10.1183/09031936.00228914

FIGURE 1.

FIGURE 1

Prevalence of symptoms before and after quitting regular cannabis use (open triangles) and among those who used cannabis regular for two consecutive phases (solid squares). Vertical bars show 95% confidence intervals.