TY - GEN AU - Poller,L AU - van den Besselaar,A M AU - Jespersen,J AU - Tripodi,A AU - Houghton,D TI - The importance of "like to like" ISI calibrations with freeze dried plasmas. European Concerted Action on Anticoagulation SN - 0021-9746 PY - 1998///0716 KW - Anticoagulants KW - Calibration KW - standards KW - Coumarins KW - Freeze Drying KW - Humans KW - International Normalized Ratio KW - Plasma KW - Prothrombin Time KW - Reference Standards KW - Species Specificity KW - Thromboplastin N1 - Publication Type: Journal Article; Multicenter Study UR - https://doi.org/10.1136/jcp.51.4.275 ER -