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Are within-person Numerical Rating Scale (NRS) ratings of breathlessness ‘on average’ valid in advanced disease for patients and for patients’ informal carers?

Crossref DOI link: https://doi.org/10.1136/bmjresp-2017-000235

Published Online: 2017-10-11

Published Print: 2017-10

Update policy: https://doi.org/10.1136/crossmarkpolicy

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