On the need for observational studies to design and interpret randomized trials in ICU patients: a case study in stress ulcer prophylaxis

Author: Cook Deborah   Heyland Daren   Marshall for the Canadian Critical Care Trials Group John  

Publisher: Springer Publishing Company

ISSN: 0342-4642

Source: Intensive Care Medicine, Vol.27, Iss.2, 2001-02, pp. : 347-354

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