Anticardiolipin antibodies (ACA) directed not to cardiolipin but to a plasma cofactor - Galli, M; Comfurius, P; Maassen, C; Hemker, H C; DeBaets, M H; Van Breda-Vriesman, P J C; Barbui, T; Zwaal, R F A; Bevers, E M (Lancet, 1990)