[4]
A multicenter,randomized, controlled clinical trial of transfusion requirements in critical care .2 Hebert PC,Wells G,Blajchman MA,et al. N Eng Med . 1999
[4]
A multicenter,randomized, controlled clinical trial of transfusion requirements in critical care .2 Hebert PC,Wells G,Blajchman MA,et al. N Eng Med . 1999