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This work was supported by U. S. National Cancer Institute (Grant No. R01 CA95747)
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Zhao, S.D., Li, Y. A note on Optimal weights and variable selections for multivariate survival data. Sci. China Ser. A-Math. 52, 1131–1133 (2009). https://doi.org/10.1007/s11425-009-0134-3
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DOI: https://doi.org/10.1007/s11425-009-0134-3