Assessing obstructive airways disease in children. Which test is best?
D000293:Adolescent; D001249:Asthma / Q000175:diagnosis*; D002648:Child; D003550:Cystic Fibrosis / Q000175:diagnosis*; D005540:Forced Expiratory Flow Rates; D006801:Humans; D012123:Pulmonary Ventilation