The Wisconsin Upper Respiratory Symptom Survey is responsive, reliable, and valid
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PII: S0895-4356(04)00349-X
doi:10.1016/j.jclinepi.2004.11.019
© 2005 Elsevier Inc. All rights reserved.
PII: S0895-4356(04)00349-X
doi:10.1016/j.jclinepi.2004.11.019
© 2005 Elsevier Inc. All rights reserved.