title: Reply: interactions and clarifying group-specific estimates by using stratification.
authors.affiliation: 1 Beaumont Hospital Dublin, Ireland.
authors.forename: Kevin
authors.initials: K
authors.lastname: Molloy
authors.forename: Tomas P
authors.initials: TP
authors.lastname: Carroll
authors.forename: Craig P
authors.initials: CP
authors.lastname: Hersh
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Lasky-Su
authors.forename: Noel G
authors.initials: NG
authors.lastname: McElvaney
mesh_terms: D005260:Female; D006579:Heterozygote; D006801:Humans; D008297:Male; D010641:Phenotype; D029424:Pulmonary Disease, Chronic Obstructive / Q000209:etiology*; D000515:alpha 1-Antitrypsin / Q000235:genetics*; D019896:alpha 1-Antitrypsin Deficiency / Q000235:genetics*
chemical_list: D000515:alpha 1-Antitrypsin