%0 Journal Article %A S. A. Lightowler %A J. Maris %T Ortho Fibrindex as a Source of Thrombim %D 1972 %R 10.1136/jcp.25.9.835 %J Journal of Clinical Pathology %P 835-835 %V 25 %N 9 %U https://jcp.bmj.com/content/jclinpath/25/9/835.full.pdf