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PSNet: Patient Safety Network
Journal Article

Diagnostic blood loss from phlebotomy and hospital-acquired anemia during acute myocardial infarction.

Salisbury AC, Reid KJ, Alexander KP, et al. Archives of internal medicine. 2011;171:1646-53.

This study discovered that blood loss from greater use of phlebotomy was independently associated with hospital-acquired anemia. An accompanying editorial [see additional link below] discusses this hazard of hospitalization in the context of more than just never events.