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Same question, different answers: a comparison of global health assessments using visual analogue scales
Mark J. Harrison, Annelies Boonen, Peter Tugwell, Deborah P. M. SymmonsVolume:
18
Language:
english
Pages:
8
DOI:
10.1007/s11136-009-9546-3
Date:
December, 2009
File:
PDF, 279 KB
english, 2009