After one year follow-up, both the ex-smokers and dual users experienced a significant improvement in asthma symptoms and lung function, especially small airways obstruction. Although the improvements in lung function were small, the improvements in asthma symptoms were clinically relevant.

While I agree with the editorial, it is quite a condemnation of the current field of tobacco control research.

LAST：Alibaba in Russian Pipe Mod Kit Dovpo E-lvt 2.0 Wholesal Waterproof VV VW Ecig Mod |NEXT：2014 wholesale hookah starbuzz e hose cartomizer cloutank