@article{tan89,
  title = {Design of Group Sequential Clinical Trials with Multiple Endpoints},
  volume = {84},
  journal = {J Am Stat Assoc},
  author = {Tang DI, Geller N. L.},
  year = {1989},
  keywords = {multivariate-analysis,study-design-and-stopping-rules},
  pages = {776-779},
  citeulike-article-id = {13264927},
  posted-at = {2014-07-14 14:09:45},
  priority = {0}
}

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