How valid is the AHRQ Patient Safety Indicator "postoperative hemorrhage or hematoma"?
Borzecki AM, Kaafarani H, Cevasco M, Hickson K, Macdonald S, Shin M, Itani KM, Rosen AK. How valid is the AHRQ Patient Safety Indicator "postoperative hemorrhage or hematoma"? J Am Coll Surg. 2011 Jun; 212(6):946-953.e1-2.