After 3-9 months of stopping smokin

After 3-9 months of stopping smoking , the lung function significantly improves by 5-10%, and respiratory symptoms of smoking as cough and shortness of breath disappear .

النتائج (الإنجليزية) 3:

After 3-9 months of stopping smoking, the lung function significantly improves by 5-10 %, and call symptoms of smoking as cough and shortness of breath disappear.