Ducharme, Francine M Diagnosis and management of asthma in preschoolers: A Canadian Thoracic Society and Canadian Paediatric Society position paper. [electronic resource] - Paediatrics & child health Oct 2015 - 353-71 p. digital Publication Type: Journal Article ISSN: 1205-7088 Standard No.: 10.1093/pch/20.7.353 doi