The Society of Thoracic Surgeons Blood Conservation Guideline Task Force; Ferraris VA, Ferraris SP, Saha SP, Hessel EA 2nd, Haan CK, Royston BD, Bridges CR, Higgins RS, Despotis G, Brown JR; The Society of Cardiovascular Anesthesiologists Special Task Force on Blood Transfusion; Spiess BD, Shore-Lesserson L, Stafford-Smith M, Mazer CD, Bennett-Guerrero E, Hill SE, Body S. Ann Thorac Surg. 2007 mayo;83(5 Suppl):S27-86.