Human T-lymphotropic virus type III (HTLV III) infection in seronegative haemophiliacs after transfusion of factor VIII - Ludlam, CA; Steel, CM; Cheingsong-Popov, R; McClelland, DBL; Tucker, J; Tedder, RS; Weiss, RA; Philp, I; Prescott, RJ (Lancet, 1985)