Childhood asthma is associated with COPD and known asthma variants in COPDGene: a genome-wide association study.
Lystra P HaydenMichael H ChoBenjamin A RabyTerri H BeatyEdwin K SilvermanCraig P Hershnull nullPublished in: Respiratory research (2018)
ClinicalTrials.gov, NCT00608764 (Active since January 28, 2008).