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Number of items: 1.
Gorgon, Elizabeth, Crew, Richard ORCID: 0000-0002-5312-8767, Burnside, Girvan ORCID: 0000-0001-7398-1346 and Williamson, Paula R ORCID: 0000-0001-9802-6636
(2019)
Higher number of items associated with significantly lower response rates in COS Delphi surveys.
JOURNAL OF CLINICAL EPIDEMIOLOGY, 108.
pp. 110-120.