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An empirical comparison of the St George’s Respiratory Questionnaire (SGRQ) and the Chronic Respiratory Disease Questionnaire (CRQ) in a clinical trial setting
  1. Dr M Rutten-van Mölken.
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Citation

Mölken MR, Roos B, Van Noord JA
An empirical comparison of the St George’s Respiratory Questionnaire (SGRQ) and the Chronic Respiratory Disease Questionnaire (CRQ) in a clinical trial setting

Publication history

  • Received February 15, 1999
  • Revision requested May 11, 1999
  • Revised June 30, 1999
  • Accepted July 12, 1999
  • First published November 1, 1999.
Online issue publication 
November 01, 1999

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