DOI:
10.1055/s-00028832
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery
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References
Hsieh FY.
Comparing sample size formulae for trials with unbalanced allocation using the logrank test.
Stat Med 1992;
11 (08) 1091-1098
DOI: 10.1002/sim.4780110810.
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