Perioperative blood transfusions in hip and knee arthroplasty: a retrospective assessment of combined risk factors.
Hans-Christoph ErbenFlorian HessJoEllen WelterNicole GrafMarc P SteurerThomas A NeffRalph ZettlAlexander DullenkopfPublished in: Archives of orthopaedic and trauma surgery (2021)
Level 3, retrospective cohort study.