Schimmer B, Morroy G, Dijkstra F, Schneeberger P M, Weers-Pothoff G, Timen A, Wijkmans C, van der Hoek W
Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
Euro Surveill. 2008 Jul 31;13(31):18939.
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