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2. Thromboembolic complications of prosthetic cardiac valves;Akbarian, M.; Austen, W.G.; Yurchak, P.M.; Scannell, J.G.;Circulation,1968
3. Pregnancy in a patient with a mitral-valve prosthesis;Bennett, G.G.; Oakley, C.M.;Lancet,1968
4. Mitral-valve prosthesis, warfarin anticoagulation, and pregnancy;Bloomfield, D.K.; Rubinstein, L.;Lancet,1969
5. Fibrinolytic enzyme system and pregnancy;Bonnar, J.; McNicol, G.P.; Douglas, A.S.;Brit. med. J,1969