von Willebrand factor/factor VIII concentrate (Haemate® P) dosing based on pharmacokinetics: a prospective multicenter trial in elective surgery - Lethagen, S; Kyrle, P A; Castaman, G; Haertel, S; Mannucci, P M; for the Haemate® P Surgical Study Group (J Thromb Haemost, 2007)