The appropriateness method.
Shekelle
Paul
P
D017558:Elective Surgical Procedures; D004921:Erythropoietin / Q000627:therapeutic use*; D006801:Humans; D009985:Orthopedics; D010818:Practice Patterns, Physicians'; D011300:Preoperative Care; D011994:Recombinant Proteins
D011994:Recombinant Proteins; D004921:Erythropoietin