A common Genetic polymorphism (46 C to T substitution) in the 5′-untranslated region of the coagulation factor XII gene is associated with low translation efficiency and decrease in plasma factor XII level - Kanaji, T; Okamura, T; Osaki, K; Kuroiwa, M; Shimoda, K; Hamaskai, N; Niho, Y (Blood, 1998)