Standard scales for measurement of functional outcome for cervical pain or dysfunction: a systematic review.
Measurement properties of disease-specific questionnaires in patients with neck pain: a systematic review
Assessment of the responsiveness of four scales in geriatric patients with chronic neck pain
French version of the Copenhagen neck functional disability scale. Joint Bone Spine
https://pubmed.ncbi.nlm.nih.gov/17011225/Measurement properties of the Brazilian version of the Copenhagen Neck Functional Disability Scale in patients with chronic neck pain
https://pubmed.ncbi.nlm.nih.gov/35059860/Development, validity and reliability of the Italian version of the Copenhagen neck functional disability scale
https://pubmed.ncbi.nlm.nih.gov/30470222/