title: [When are 4th-generation cephalosporins needed?].
authors.forename: S V
authors.initials: SV
authors.lastname: Iakovlev
mesh_terms: D018550:Cephalosporin Resistance; D002511:Cephalosporins / Q000037:antagonists & inhibitors / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006801:Humans; D013329:Structure-Activity Relationship
chemical_list: D002511:Cephalosporins