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Holst, Lars B., Marie W. Petersen, Nicolai Haase, Anders Perner, e Jørn Wetterslev. "Restrictive Versus Liberal Transfusion Strategy for Red Blood Cell Transfusion: Systematic Review of Randomised Trials With Meta-analysis and Trial Sequential Analysis." BMJ 2015.

Holst, Lars B., et al. "Restrictive Versus Liberal Transfusion Strategy for Red Blood Cell Transfusion: Systematic Review of Randomised Trials With Meta-analysis and Trial Sequential Analysis." BMJ 2015.