Three distinct point mutations in the factor IX gene of three Japanese CRM+ hemophilia B patients (Factor IX BMNagoya 2, Factor IX Nagoya 3 and 4) - Hamaguchi, M; Matsushita, T; Tanimoto, M; Takahashi, I; Yamamoto, K; Sugiura, I; Takamatsu, J; Ogata, K; Kamiya, T; Saito, H (Thromb Haemostas, 1991)