Gauging the accuracy of laboratory testing from Medicare data.
L B
LB
Sacks
D006801:Humans; D007753:Laboratories / Q000592:standards; D006278:Medicare / Q000706:statistics & numerical data; D011517:Prothrombin Time; D011786:Quality Control; D014481:United States; D014859:Warfarin / Q000592:standards*
D014859:Warfarin