title: Document the method of twin classification. Twins with pulmonary adenocarcinoma.
authors.forename: N L
authors.initials: NL
authors.lastname: Segal
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics*; D004200:Diseases in Twins / Q000235:genetics*; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics*; D008297:Male; D014427:Twins / Q000235:genetics*