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