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Colombian Journal of Anesthesiology > 2017 > 45 > 2 > 143-146
Colombian Journal of Anesthesiology > 2013 > 41 > 2 > 146-149
Colombian Journal of Anesthesiology > 2017 > 45 > 2 > 143-146
Colombian Journal of Anesthesiology > 2013 > 41 > 2 > 146-149