Increased levels of vascular endothelial cell markers in thrombotic thrombocytopenic purpura - Wada, H; Kaneko, T; Ohiwa, M; Tanigawa, M; Hayashi, T; Tamaki, S; Minami, N; Deguchi, K; Suzuki, K; Nakano, T; Shirakawa, S (Am J Hematol, 1993)