题名 | Overall survival: a gold standard in search of a surrogate: the value of progression-free survival and time to progression as end points of drug efficacy. |
作者 | Zhuang SH, Xiu L, Elsayed YA. |
杂志 | Cancer J. 2009 Sep-Oct;15(5):395-400. doi: 10.1097/PPO.0b013e3181be231d. |
链接 | http://www.ncbi.nlm.nih.gov/pubmed/23669424 |
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