RT Journal Article SR Electronic T1 Air pollution and asthma JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP archdischild-2017-314543 DO 10.1136/archdischild-2017-314543 A1 Sotiris Vardoulakis A1 Nicholas Osborne YR 2018 UL http://adc.bmj.com/content/early/2018/03/08/archdischild-2017-314543.abstract AB