title: In reply.
authors.affiliation: The Johns Hopkins Medical Institutions, Baltimore, Maryland. sfrank3@jhmi.edu.
authors.forename: Steven M
authors.initials: SM
authors.lastname: Frank
mesh_terms: D000758:Anesthesia; D001803:Blood Transfusion / Q000191:economics*; D006801:Humans; D009870:Operating Room Information Systems / Q000191:economics* / Q000458:organization & administration*; D057234:Preoperative Period