Evaluating Disease Severity in Chronic Pain Patients with and without Fibromyalgia: A Comparison of the Symptom Impact Questionnaire and the Polysymptomatic Distress Scale
Validating the revised Symptom Impact Questionnaire with a proposed fibromyalgia phenotype using experimentally-induced pain and patient self-reports
https://pubmed.ncbi.nlm.nih.gov/26523027/
Evaluating Disease Severity in Chronic Pain Patients with and without Fibromyalgia: A Comparison of the Symptom Impact Questionnaire and the Polysymptomatic Distress Scale.
https://pubmed.ncbi.nlm.nih.gov/1865419/
The Fibromyalgia Impact Questionnaire: development and validation