Failure of Thromboprophylaxis in Pregnancy Caused by Dual Deficiencies of Protein S and Protein C - Morikawa, Mamoru; Yamada, Hideto; Kato, Emi H; Wada, Shinichiro; Suzuki, Shigenori; Sakuragi, Noriaki; Minakami, Hisanori (Seminars in Thrombosis and Hemostasis, 2005)