TY  - RPRT
TI  - Prothrombin times: when are they not the same?
AU  - W T Sawyer
PY  - 1991
DO  - 10.1016/s0160-3450(15)31286-1
UR  - https://pubmed.ncbi.nlm.nih.gov/1763777/
ID  - 1763777
ER  -