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2008 Sep 1;47(5):712-22.1086/590943.
PLEASE help me put this in APA citation
Clin Infect Dis.2008 Sep 1;47(5):712-22. doi: 10.1086/590943.
Emergence of drug resistance in HIV type 1-infected patients after receipt of first-line highly active antiretroviral therapy: a systematic review of clinical trials.Gupta R1,Hill A,Sawyer AW,Pillay D.