title: Pathogenesis of bacteremia during pyelonephritis.
authors.forename: J R
authors.initials: JR
authors.lastname: Johnson
mesh_terms: D000367:Age Factors; D000368:Aged; D016470:Bacteremia / Q000209:etiology*; D004927:Escherichia coli Infections / Q000209:etiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011704:Pyelonephritis / Q000150:complications*