Biological activity of recombinant factor VIII variants lacking the central B-domain and the heavy-chain sequence Lys713-Arg740: discordant in vitro and in vivo activity - Merens, K; Donath, MJSH; van Leen, RW; de Keyzer-Nellen, MJM; Verbeet, MPh; Klaase, JM Bos; Leyte, A; van Mourik, JA (Brit J Haematol, 1993)