Surveillance bias and deep vein thrombosis in the national trauma data bank: the more we look, the more we find.
Pierce CA, Haut ER, Kardooni S, Chang DC, Efron DT, Haider A, Pronovost PJ, Cornwell EE. Surveillance bias and deep vein thrombosis in the national trauma data bank: the more we look, the more we find. J Trauma. 2008 Apr; 64(4):932-6; discussion 936-7.