Halldén, C., Johansson, A., Säll, T. and Lethagen, S. 2009. Genetic characterization of von Willebrand disease type 1: tracing the evolutionary history of the von Willebrand factor gene region. Hematology Meeting Reports (formerly Haematologica Reports). 1, 4 (May 2009). DOI:https://doi.org/10.4081/hmr.v1i4.236.