title: Invited commentary.
authors.affiliation: Department of Anesthesiology, St. Vincent Mercy Medical Center, 2213 Cherry St, Toledo, OH 43608, USA.
authors.forename: Milo
authors.initials: M
authors.lastname: Engoren
mesh_terms: D000740:Anemia / Q000097:blood* / Q000453:epidemiology / Q000209:etiology; D001803:Blood Transfusion; D002315:Cardiopulmonary Bypass / Q000009:adverse effects*; D003324:Coronary Artery Disease / Q000097:blood / Q000453:epidemiology / Q000601:surgery*; D006400:Hematocrit; D006801:Humans; D007558:Italy / Q000453:epidemiology; D009017:Morbidity / Q000639:trends; D009204:Myocardial Revascularization / Q000379:methods*; D011184:Postoperative Period; D012307:Risk Factors; D015996:Survival Rate / Q000639:trends