DO MARKER STATES IMPROVE MEASUREMENT PROPERTIES OF UTILITY INSTRUMENTS: A RANDOMIZED MULTI-CENTER TRIAL IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE Conferences uri icon

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authors

  • Schunemann, Holger
  • Goldstein, Roger
  • Mador, M Jeffrey
  • McKim, Douglas
  • Stahl, Elisabeth
  • Austin, Peggy
  • Guyatt, Gordon

publication date

  • November 1, 2004