Methodologic issues in the use of bleeding as an outcome in transfusion medicine studies.
Heddle, Nancy M.; Cook, Richard J.; Webert, Kathryn E.; Sigouin, Christopher; Rebulla, Paolo; in collaboration with the Biomedical Excellence for Safer Transfusion (BEST) Working Party of the International Society for Blood Transfusion
[Miscellaneous Article] Transfusion. 43(6):742-752, June 2003.

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