Anti-prothrombin but not “pure” Anti-cardiolipin Antibodies Are Associated with the Clinical Features of the Antiphospholipid Antibody Syndrome - Sorice, M.; Pittoni, V.; Circella, A.; Misasi, R.; Conti, F.; Longo, A.; Pontieri, G.M.; Valesini, G. (Thrombosis and Haemostasis, 1998)