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Validated questionnaires should not be modified
Journal article

Validated questionnaires should not be modified

Authors

Juniper EF

Journal

European Respiratory Journal, Vol. 34, No. 5, pp. 1015–1017

Publisher

European Respiratory Society (ERS)

Publication Date

November 2009

DOI

10.1183/09031936.00110209

ISSN

0903-1936