HebertPCWellsGBlajchmanMA. A multicentre, randomized, controlled clinical trial of transfusion requirements in critical care. N Engl J Med1999;340: 409–17.
2.
WhiteMMartin-LoechesILawlessMW. Hospital-acquired pneumonia after lung resection surgery is associated with characteristic cytokine gene expression. Chest2011;139: 626–32.