# Clustering a large Spanish sample of patients with fibromyalgia using the Fibromyalgia Impact Questionnaire–Revised: differences in clinical outcomes, economic costs, inflammatory markers, and gray matter volumes

> Research article (Pain, 2018) · cited 33× · AI/ML

**Wikidata**: [openalex:W2905842643](https://www.wikidata.org/wiki/openalex:W2905842643)  
**Source**: https://4ort.xyz/entity/clustering-a-large-spanish-sample-of-patients-with-fibromyalgia-using-the-fibromyalgia-impact-questionnairerevised-diffe