059 Nonrandomised Studies as a Source of Complementary, Sequential or Replacement Evidence for Randomised Controlled Trials in Systematic Reviews and Guidelines Academic Article uri icon

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authors

  • Sch√ľnemann, H
  • Tugwell, P
  • Reeves, B
  • Akl, Elie
  • Santesso, N
  • Spencer, F
  • Shea, B
  • Wells, G
  • Helfand, M

publication date

  • 2013