Figure 1
From: Maternal smoking promotes chronic obstructive lung disease in the offspring as adults
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F2047-783X-14-S4-27/MediaObjects/40001_2009_Article_451_Fig1_HTML.jpg)
Smoking fathers did not have any influence on FEV 1 of their offspring (= our COPD patients) which is in contrast to maternal smoking. CI - confidence interval, NS - non-smoker, S - smoker.