Blood transfusions: good or bad? Confounding by indication, an underestimated problem in clinical transfusion research.
Middelburg
Rutger A
RA
Department of Clinical Epidemiology and the Department of Immunohematology and Blood Bank, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.
van de Watering
Leo M G
LM
van der Bom
Johanna G
JG
D000818:Animals; D035843:Biomedical Research; D001803:Blood Transfusion; D006801:Humans