%0 Journal Article %T Multiple attempts to stop smoking, even with relapses, reduced loss of pulmonary function %D 1999 %R 10.1136/ebn.2.3.90 %J Evidence Based Nursing %P 90-90 %V 2 %N 3 %U https://ebn.bmj.com/content/ebnurs/2/3/90.full.pdf