We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBlood transfusions: good or bad? Confounding by indication, an underestimated problem in clinical transfusion research.AuthorsMiddelburg RA; van de Watering LM; van der Bom JGPublicationTransfusion, 2010, Vol 50, Issue 6, p1181ISSN1537-2995Publication typearticleDOI10.1111/j.1537-2995.2010.02675.x