A sudden increase in factor VIII inhibitor development in multitransfused hemophilia A patients in The Netherlands - Rosendaal, FR; Nieuwenhuis, HK; van den Berg, HM; Heijboer, H; Mauser-Bunschoten, EP; van der Meer, J; Smit, C; Strengers, PFW; Briet, E; Dutch Hemophilia Study Group (Blood, 1993)