Cramer A D, Melargano A J, Phifer S J
Lancet. 1976 Jul 3;2(7975):12-4. doi: 10.1016/s0140-6736(76)92967-6.
A reduced level of factor XII has been observed in 9 of 39 patients with von Willebrand's disease. This apparent common variant of von Willebrand's disease has not previously been described, and its significance is not known.
在39例血管性血友病患者中,有9例观察到凝血因子XII水平降低。这种血管性血友病明显的常见变异此前尚未被描述,其意义尚不清楚。