Unusually large plasma factor VIII: von Willebrand factor multimers in chronic relapsing thrombotic thrombocytopenic purpura - Moake, JL; Rudy, CK; Troll, JH; Weinstein, MJ; Colannino, NM; Azocar, J; Seder, RH; Hong, SL; Deykin, D (N Engl J Med, 1982)