Respiratory and cardiovascular responses to walking down a traffic-polluted road compared with walking in a traffic-free area in participants aged 60 years and older with chronic lung or heart disease and age-matched healthy controls: a randomised, crossover study.
Lancet. 2018 Jan 27;391(10118):339-349. doi: 10.1016/S0140-6736(17)32643-0. Epub 2017 Dec 5.
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PMID:29221643
Free PMC article.
Clinical Trial.