Increased activated protein C - protein C inhibitor complex level in patients positive for lupus anticoagulant - Nakase, T; Wada, H; Minamikawa, K; Wakita, Y; Shimura, M; Hiroyama, K; Tamaki, S; Shirakawa, S; Deguchi, K; Nisioku, J; Hayashi, T; Suzuki, K (Blood Coagul Fibrinolysis, 1994)