title: Invited commentary.
authors.affiliation: The Dartmouth Institute for Health Policy and Clinical Practice, Section of Cardiology, Department of Medicine, The Geisel School of Medicine at Dartmouth, Rubin 505 Clinical Research Section, Dartmouth-Hitchcock Medical Center, One Medical Center Dr, Lebanon, NH 03756, USA. jeremiah.r.brown@dartmouth.edu
authors.forename: Jeremiah R
authors.initials: JR
authors.lastname: Brown
mesh_terms: D000740:Anemia / Q000453:epidemiology*; D002318:Cardiovascular Diseases / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D057216:Propensity Score; D018570:Risk Assessment / Q000379:methods*