Impairment of the swallowing reflex in exacerbations of COPD

various potential confounders across the life course.What about children with respiratory symptoms early in life?Studies have shown that there is an association between initial airway symptoms and later lung function and respiratory illnesses, 3 and that subjects with asthma have persistent reduced lung function. 4 Finally, did the authors account for family history of asthma and/or atopy or allergic sensitisation?In my opinion, many confounders and factors that may have an effect on the outcome were not addressed adequately in this paper, so the conclusions drawn may not be relevant.