title: Nitric oxide and asthma severity: towards a better understanding of asthma phenotypes.
authors.forename: M
authors.initials: M
authors.lastname: Aytekin
authors.forename: R A
authors.initials: RA
authors.lastname: Dweik
mesh_terms: D001249:Asthma / Q000378:metabolism* / Q000503:physiopathology; D045853:Exhalation; D006801:Humans; D009569:Nitric Oxide / Q000032:analysis / Q000378:metabolism*; D010641:Phenotype; D012720:Severity of Illness Index
chemical_list: D009569:Nitric Oxide