Review

Beta-lactam versus beta-lactam-aminoglycoside combination therapy in cancer patients with neutropenia.

Cochrane Db Syst Rev. 2013 Jun 29; 2013 (6): CD003038CD003038.
Meta Analysis

Effect of aminoglycoside and beta-lactam combination therapy versus beta-lactam monotherapy on the emergence of antimicrobial resistance: a meta-analysis of randomized, controlled trials.

Clin. Infect. Dis. 2005 Jul 15;41(2):149-58.
Review

Clinical implications of β-lactam-aminoglycoside synergism: systematic review of randomised trials.

Int. J. Antimicrob. Agents. 2011 Jun 1;37(6):491-503.