1. Altura, E. M. and Altura, B. T., 1977, Influence of sex hormones, oral contraceptives and pregnancy on vascular muscle and its reactivity, in: “Factors influencing vascular reactivity”, O.Carrier and S. Shibata, eds., Igaku-Shoin, Tokyo. New York
2. Cash, J. D., 1978, Control mechanisms of activator release, in: “Progress in chemical fibrinolysis and thrombolysis. Vol 3”, J. F. Davidson, R. M. Rowan, M. M. Samama, P. C. Desnoyers, Raven Press, New York
3. Comp, P. C., Jacock, R. M., Ferrell, G. L. and Esmon, C. T., 1982, Activation of protein C in vivo, J. Clin. Invest., 70: 127–134
4. Curd, J. G., Prograis, L. J. and Cochrane, C. G., 1980, Detection of active kallikrein in induced blister fluid of hereditary angioedema patient, J. Ex. Med., 152: 742–747
5. Donaldson, J. H. and Evans, R. R., 1963, A biochemical abnormality in hereditary angioneurotic edema: Absence of serum inhibitor of C’l-esterase, Amer. J. Med., 35: 37–44