Impulse oscillometry and free-running tests for diagnosing asthma and monitoring lung function in young children. - Burman J; Malmberg LP; Remes S; Jartti T; Pelkonen AS; Mäkelä MJ (Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology, 2021)