_:b662921567 . . "215" . "10.1053/srin.2000.18070" . . . _:b662921567 "2023-12-21T14:48:56.981845"^^ . "15" . "215" . . "208" . "10.1053/srin.2000.18070" . . . _:b662921567 . . "2000-09"^^ . . _:b662921566 . . . "10.1053/srin.2000.18070" . "Evidence of bacterial infection in acute exacerbations of chronic bronchitis" . _:b662932474 . _:b662921566 . _:b662932474 . _:b662921567 . . _:b662932474 . _:b662921567 . _:b662921566 . "Elsevier BV" . "15" . _:b662921566 . _:b662921567 . _:b662932474 . _:b662932474 "2023-12-22T08:57:21.311758"^^ . . "208" . _:b662921566 "2023-12-21T14:48:56.396670"^^ . _:b662921566 . _:b662932474 .