Anticardiolipin antibodies (ACA) directed not to cardiolipin but to a plasma protein cofactor - Galli, M; Comfurius, P; Maassen, C; Hemker, HC; de Baets, MH; van BredaVriesman, PJC; Barbui, T; Zwaal, RFAZ; Bevers, EM (Lancet, 1990)