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Lack of concealment may lead to selection bias in cluster randomized trials of palliative care
Jordhùy, M S, Fayers, P M, Ahlner-Elmqvist, M, Kaasa, SVolume:
16
Language:
english
Journal:
Palliative Medicine
DOI:
10.1191/0269216302pm523oa
Date:
January, 2002
File:
PDF, 150 KB
english, 2002