Figure 1
From: Diverging trends of chronic bronchitis and smoking habits between 1998 and 2010
Adjusted prevalence of CB according to smoking habits. Bars represent 95% confidence intervals.
Figure 1 | Respiratory Research
From: Diverging trends of chronic bronchitis and smoking habits between 1998 and 2010
Adjusted prevalence of CB according to smoking habits. Bars represent 95% confidence intervals.
