Recurring mutations at CpG dinucleotides in the region of the von Willebrand factor gene encoding the glycoprotein Ib binding domain, in patients with type IIB von Willebrand’s disease - Lillicrap, D; Murray, EW; Benford, K; Blanchette, VS; Rivard, GE; Wensley, R; Giles, AR (Br J Haematol, 1991)