title: Chronic obstructive pulmonary disease.
authors.forename: K L
authors.initials: KL
authors.lastname: Nichol
mesh_terms: D006801:Humans; D007252:Influenza Vaccines; D008173:Lung Diseases, Obstructive / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D014611:Vaccination
chemical_list: D007252:Influenza Vaccines; D022242:Pneumococcal Vaccines