Molecular epidemiological analysis of the transboundary transmission of 2003 highly pathogenic avian influenza H7N7 outbreaks between the Netherlands and Belgium., Van Borm, Steven, Jonges M, Lambrecht Bénédicte, Koch G, Houdart P, and van den Berg Thierry , Transbound Emerg Dis, 2014 Feb, Volume 61, Issue 1, p.86-90, (2014)