Figure A1.2, Brief pain inventory - WHO Guidelines for the Pharmacological and Radiotherapeutic Management of Cancer Pain in Adults and Adolescents - NCBI Bookshelf
Brief Pain Inventory Form - Fill Online, Printable, Fillable, Blank | pdfFiller
Development and Initial Validation of the PEG, a Three-item Scale Assessing Pain Intensity and Interference | SpringerLink
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The measurement of pain in patients with trigeminal neuralgia. | Semantic Scholar