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JAMA. 1973;225(9):1131-1132. doi:10.1001/jama.1973.03220370067043.
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Jaques LB:  Heparin from different sources . Lancet 2:1262, 1972.
Link to Article[[XSLOpenURL/10.1016/S0140-6736(72)92326-4]]
Eika C:  The platelet aggregating effect of eight commercial heparins . Scand J Haematol 9:480-482, 1972.
Link to Article[[XSLOpenURL/10.1111/j.1600-0609.1972.tb00973.x]]
Gauthier PB, Sawa T, Kenyon AJ:  Temperature dependence of heparin inactivation in acid . Arch Biochem Biophys 130:690-692, 1969.
Link to Article[[XSLOpenURL/10.1016/0003-9861(69)90092-7]]
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