title: Ureidopenicillins and risk of Clostridium difficile infection.
authors.forename: J
authors.initials: J
authors.lastname: Freeman
authors.forename: M H
authors.initials: MH
authors.lastname: Wilcox
mesh_terms: D000667:Ampicillin / Q000009:adverse effects*; D016360:Clostridioides difficile; D003015:Clostridium Infections / Q000209:etiology*; D004761:Enterocolitis, Pseudomembranous / Q000209:etiology* / Q000382:microbiology; D006801:Humans; D010406:Penicillins / Q000009:adverse effects*; D010878:Piperacillin / Q000009:adverse effects*; D012307:Risk Factors
chemical_list: D010406:Penicillins; D000667:Ampicillin; D010878:Piperacillin