Utilization of Previously Treated Patients (PTPs), Noninfected Patients (NIPs), and Previously Untreated Patients (PUPs) in the Evaluation of New Factor VIII and Factor IX Concentrates - White, Gilbert C.; DiMichele, Donna; Mertens, Koen; Negrier, Claude; Peake, Ian R.; Prowse, Christopher; Schwaab, Ranier; Yoshioka, Akira; Ingerslev, Jørgen (Thrombosis and Haemostasis, 1999)