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    J Clin Epidemiol. 2000 Apr;53(4):335-42.

    The classics: a tribute to the fiftieth anniversary of the randomized clinical trial.

    Source

    Welch Center for Prevention, Epidemiology and Clinical Research, The Johns Hopkins University, Baltimore, MD, USA. ffuchs@hcpa.ufrgs.br

    PMID:
    10785563
    [PubMed - indexed for MEDLINE]

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