TY  - RPRT
TI  - The heparin-thrombin clotting-time.
AU  - J R O'Brien
PY  - 1976
DO  - 10.1016/s0140-6736(76)92395-3
UR  - https://pubmed.ncbi.nlm.nih.gov/73841/
ID  - 73841
ER  -