@misc{indiciaee74baae1b896, title = {Measuring partial thromboplastin-time. An international collaborative study.}, author = {L Poller and J M Thomson}, year = {1976}, doi = {10.1016/s0140-6736(76)91224-1}, url = {https://pubmed.ncbi.nlm.nih.gov/61512/}, note = {Source identifier: 61512} }