@article{nga97emp,
  title = {An Empirical Comparison of Statistical Tests for Assessing the Proportional Hazards Assumption of {{Cox}}'s Model},
  volume = {16},
  journal = {Stat Med},
  author = {Ng'andu, Nicholas H.},
  year = {1997},
  keywords = {assessing-ph,power-of-harrell-lee-test},
  pages = {611-626},
  citeulike-article-id = {13264625},
  posted-at = {2014-07-14 14:09:39},
  priority = {0}
}

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